If you promise to do it outside, I'll suggest getting some mentos, tape, and a two liter bottle of diet soda. Put two mentos on the tape, then tape it to the edge of the soda bottle and screw the cap closed. Shake it up, then toss it up into the air over some cement. I'm not doing it with you, but I think you might want to try that. Don't do it inside though or you'll honestly regret it.

[ From Weiss's list of things she's wanted to try but grew up with too strict of a family to ever actually make a huge, unprofessional mess unbefitting an heiress. ]