Although I enjoy jumping on a trampoline as much as the next guy, I don't think I'd have the nerve to do any of these tricky shenanigans....
Besides the usual "uh...no way" response most of us would have, I'd be afraid that I'd get so comfortable with it, that I might accidentally drop off of a parking structure after drinking and forget that there wasn't a trampoline down below to send me back up.
Also, someone posted this video on Facebook of Sandra Bullock confronting Chelsea Handler in the shower. It's pretty hilarious (if you want to see a larger version, click here).
They are both very funny gals!