Quote Originally Posted by thinkfast
Co2 bombs? what is this trickery you speak of?
a little dry ice, water, and a 2 liter coke bottle...*BOOM* a kid got arrested last week at Georgia Tech for it...that's where i learned how to do it

use a tiny bit of dry ice, about 5 pieces small enough fit in the hole is way more than enough...it'll explode in 3-5 minutes and if you want it faster just add more water (fills up the volume). before putting the top on squeeze the air out. I wouldn't suggest it to suprise someone though..the kid got hit with two felony charges and a $15k bail when a maintenance person at tech picked it up then it went off.