I was stumbling along the web and found the site metacafe. On this site i found a series of videos by shootingeggs. These are cool tricks and other fun stuff you can do like water that turns to ice and gives off heat, or flying hydrogen exploding condoms, or if i mix solid x and liquid y one, i get a substance that with one drop blow up a watermellon. My question is how do people like this figure this stuff out? is it just already known stuff applied in weird ways? or do they just get a good grade in chemistry and have way to much free time?