World’s Sharpest Knife!

– This is a normal knife and this is the world’s sharpest knife. This is an ordinary skateboard and this is a jet-powered skateboard. And today we’re gonna be reacting to the coolest homemade interventions ever. – Ever. – Starting with the world’s sharpest knife. – I’ll be the judge of that.

– How do you determine that there’s no other knife on the planet sharper? – You have to take the previous world’s sharpest knife and put it against the new one. And if it cuts the world’s sharpest knife, it’s now the new sharpest knife. – I doubt that’s how that works.

– Look at that, it also cuts- – That is pretty sharp. – paper really well. – I mean, it’s sharp but how do we know it’s the world’s sharp… Oh, well, those balloons didn’t stand a chance. Never mind. Everyone knows balloons are as hard as diamond. This guy’s gonna make chain mail

Out of the tabs of soda. – I had this because I was drinking a Dr. Pepper. – Oh, my gosh. – My church used to collect these soda tabs. And they said it was to recycle, to raise money for something. But what if they were just building armor in the back?

– Your church just has an armory of soda armor. Their arms are covered in Dr. Pepper. – Three, two, one. – He put his back into that. That was like a baseball swing. – Looks like it still hurt. – See, I was about to say, like, you might not get cut from it.

– But you still got a broken rib. – Yeah, I wouldn’t have any air in my lungs anymore. – And if you thought that was cool, this is a flying box fan drone. – Oh, my God. They’re using box fans. – That’s genius. – That shouldn’t be possible.

– No, that’s genius. – I need to see this. – That’s genius. – Oh, my God. What if you just had one of those fly out your window and you just went outside, you’re like, “My fan’s flying away.” Everyone… – Whoa. Ooh. – That was cool. – They got 30 seconds.

You didn’t even get to finish your story. – So in the history of mankind, a Nerf dart has never flown faster than this. Let’s see it. Boom. – Ooh. – Wait, did it go through it? – Why does this look so, like, dark and mysterious? – I know.

That looks like it was in a “Batman” film. It looked like it was the Joker and the Red Bull’s like, “Please, not the Nerf bullet.” This is how to make a tin can robot. Okay, what is he doing with this can? – Hey, this feels like we’re going back to the old days.

– The life hacks. – Yeah. – Who was here when we used to roast life hacks? – No one. – You are an OG. – No one was here. – What is he doing? – Making a robot. – That just looks like a car. But does this robot do anything?

Oh, it does. – It should. – That’s a cute robot. – That is pretty cute. If it wasn’t cute, I would’ve said that was the stupidest thing ever. – Take the eyeballs off and it’s lame. I’d argued the same thing with Chris. No eyeballs? Bye. All right, this is a TV.

I’m not gonna read the notes so I don’t know what he’s doing. – That’s not a TV. That’s a computer monitor. – I didn’t read the notes. – Wait, okay. They took the film out of the monitor and then cut it into some glasses. And look. – Wait, really? – Yeah.

Look at that. – Does that actually work like that? – Only with like those old monitors. – Is that why it showed YouTube from like 30 years ago? – Yeah. – That’s cool. All right, so this is turning office supplies into a crossbow.

– This is how to take care of that annoying person next to you. You know, they eat their lunch really loud. – You can’t take time to go to a store to get a real crossbow. What? You got a deadline. – You got a job here. – Amazon doesn’t even

Let you use the bathroom. They’re not gonna let you go get a crossbow. So you make do what you got there. “How to Make a Knife from Kitchen Foil.” – Is that, like, kitchen foil or aluminum foil? – Aluminum deez nuts. Sorry. – I haven’t deez nuts- – Got you.

– in this video, I had to. – And it wasn’t even that good. – Even though it wasn’t good… I agree, it wasn’t good. I had to. It’s mandatory. Every video, I’d deez nuts you. That looks real. – It is real. – It’s aluminum foil.

– But what is aluminum foil made out of? – Imagine if that was your pee-pee. – Why did I show up today? – Put that in or I quit. What can you cut with paper? You can cut a coconut. I know ’cause we did it. Dude, this was so fun.

Remember when we did this? – We made a whole video about that, didn’t we? – Yeah, we had the exact same thing here. – Isn’t that crazy that that used to be what we were like. “All right, we’re gonna make a whole entire video off of this.” – It is so much easier.

Now I gotta like, I gotta recreate “Squid Game” and build sets, and spend $3 million on a video. But back then I was like… – L. “Yo, let’s cut a circle off a paper and grab a tool from Lowe’s.” – Yo, why would you recreate “Squid Game” when you could just

Microwave a microwave? – DIY mini gun. Mini gun, right? Hold up, what are we getting ourselves into here? – Wait a minute. – Does it actually work? – Yeah, This is cool. – This is very cool. – They’re like, “All right, here’s how you do it.

Just skip a few steps and then boom.” How does it actually work? – That’s cool. Forging a bow out of rusted leaf spring. – I don’t know what a leaf spring is. Oh, that’s that thing on a truck. – So he’s forging a bow out of metal.

– Oh, this is like a “Lord of the Rings” type, though. Ooh, it’s getting pretty. – On one shot, it’s rusty. The next, it’s this. – You gotta believe it. – I don’t believe it. – How long do you think it took to cut those indentions?

– I don’t know but he said it was… Oh, my gosh. – Now it’s got wood and… Wow. – Nice. That was cool. – That was a good video. – Yes. – In order to turn this into a tiny knife, we’re going to do some forging on it.

– These are the type of videos I watch at, like, 1:00 AM when I don’t know what else to do. Just people forging stuff. – Wow. – Only that tiny knife. – That’s higher quality than my eyes. What happens if you put tracks on a Ford? – Tractor.

– This clip is only here for Chris because he is a truck nerd. – I’m not a truck nerd. I just like… Oh, look at that. That’s cool, right there. – “I’m not a truck nerd. Oh, my god. Truck.” – Don’t go, man. Oh, look at that truck now.

I actually have always wanted a truck with tracks on it. You can’t stop them. No one can stop you either. And it’s street legal. That is a completely street legal deal. – Let’s see it in action. – Look at that. – That is kinda cool. – They can’t be stopped. Look at it.

That’s so cool. You got triangles on your truck. – Your circles turned into triangles. – We’ve been using circles all these years. It’s time to use triangles. – Circle triangle. – Why you so mean to me? – Jet-powered boosted board. – You shouldn’t be allowed to just do this

’cause, like, maybe this guy came but what if somebody tried that wasn’t able to? – What is that guy, Surfer? The Silver Surfer? What’s his name? – Silver Surfer. – Oh. – What’s that? What’s that Spider-Man guy’s name? – I literally just called him Silver Surfer

’cause he is silver on like a surfboard. – That’s probably why they called him Silver Surfer. – Oh. – Yeah, that’s pretty cool. – That guy’s living his best life. I’m proud of you, man. – I expected jet power to be like… – Something like flames flying out. Agreed.

– This is cool but it looks safe. When I hear jets, I think . – Roomba pool cleaner. – Ooh. Pretty 3D printing. – Oh, is that the things to make the Roomba float? – Those are like paddle wheels. – Oh. – You know what he’s making?

It’s literally like Mark Rober’s trash robot but they clean his pool. – Oh, my gosh. Wait, how does this work? I need to see it in action. – And it just goes. – Yep. That’s pretty cute. Look, it’s even got arms. It’s like, “I’m gonna eat all the pool trash.”

– What happens if, you know, a bunch of leaves fall down? You got thousands of leaves in your backyard. This little boy ain’t handling that. – That’s a little boy. He can’t handle that many leaves. I need a big boy.

– I would say I’d give it a 10 out of 10 for looks. Usability, I don’t know. Up next is an automatic bullseye. Now here’s the thing. If you wanna skip this clip, you can. I mean obviously, this guy isn’t that smart. – They’re not very interesting.

– I mean, we’ve all built a bullseye that moves to catch a dart. It’s not that crazy. Like, you just put some wires, put it on a frame. Like, what? He probably spent like only a year or two making this, like… – You’re so aggressive to Mark. I love it.

– The more I like someone, the more I wanna make fun of him. – He must like me so much. – Except for Chris. Jokes aside, this thing is really cool. You literally can’t miss the bullseye. And after building it, he took it into a bar and look at these people.

– They’ve had a little bit of apple juice so they don’t understand what’s going on. And they think they’re insane at darts now. That’s pretty funny. – Apple juice. – Apple juice. – Oh, my gosh. – Oh my God. It’s a bug. – That is a ginormous bug. Give me a camera.

– Oh, Oh. – Look at that bug. Oh, my God. – Come here, sir. I’m not gonna kill it. You just catch it and then now we can just throw it outside. – But what if he comes back? – If the hand of God just reached down and picked you up

And put you somewhere, would you tempt it again? – Kinda. I’d be like, “Wee.” All right, steam-powered Nerf gun. A lot of Nerf stuff in this video. – I like the steam. I feel like we should have stuck with steam-powered stuff. – Steam-powered video games. – Yeah, imagine if we had

Steam-powered computers. – No. – Not to cut you off, but this is more important. This makes me want to go play “Black Ops – Zombies” right now. You wanna go? – Yeah. – All right, thanks for watching. Subscribe. – Bye.