• World's Biggest T-Shirt Cannon!

Have you ever been to a huge sports game and at half time they shoot t-shirt cannons and maybe you can catch one?

That’s fun, but what’s not so fun is if you’re sitting so far up that the t-shirts can’t even reach you!

Mark Rober teamed up with 12-year-old Anthony who wants to be a mechanical engineer, and together they built the world’s largest t-shirt cannon.

It’s so powerful, it can actually shoot a t-shirt over and above a 30 story building!

Check it out: