I've got a funny story that this thread reminds me of. I hope it doesn't get anyone angry.
When I was about 13, me and a buddy of mine used to go to the pet store in the mall and hang out in the fish section. All they had was freshwater, so it got kind of boring quickly. Our means of entertainment was to wait until no employees were around and scoop up little fish with our hands and throw them into tanks containing oscars, cichlids, and other large/hostile fish. It was fun to watch the big fish gulp up the little one in one bite.
Ok, now you know I'm psycho lol.... at least when I was a kid.