this is a boo loalloon. look what happens. pour some on top of it.essed up whoopee cushion. >> it's feeling back up with air. oh, my gosh, oh my -- whoa. it's -- >> that is cool. >> i would have never have predicted that. >> and a reason to -- >> sticky hands. bouncy balls. >> smells like ethyl. >> oh, put it down. >> of course, since you've got a couple of geeks, do i spy "star wars" figures? what do you think is going to happen to hans solo? >> going to freeze himnom choco. ♪ >> and there he is. frozen hans solo. >> will he smash it to bits? >> theet chocol eat that chocol >> that's how you have fun with liquid nitrogen. >>> deciding to arm wrestle his buddy josh. cory is a little off-screen. got the red t-shirt on. josh is the one with the giant biceps. >> looks like kind of a mismatch. >> cory says he heard a crack about 30 seconds into this video, but didn't really worry about it too much, but maybe -- he should have. >> oh. ah! >> oh. you know what's weird is you heard a warm-up crack, too. you kind of heard like a little crack before and then