The idea is pretty simple: I'll give a starting word and the next poster must add a single prefix to it, example? Here you go!
Jukakun: Baseball Bat
Next poster: Furious Baseball Bat
Another poster: Huge Furious Baseball Bat
Multi-named prefixes like Double-shooting are allowed and count as a single prefix, also when the word receives too many prefixes (Something like 20, but not necessarily 20) the next poster can choose another object, pretty simple huh? Now that you got it, jump in and join the fun