It's for having cheap pokemon. It's not trolling if you battle under no rules. Here's a few laughs for you guys. There's definitely no skill involved if that's what you're hoping for.
http://replay.pokemonshowdown.com/anythinggoes-188448834
http://replay.pokemonshowdown.com/anythinggoes-188446239
http://replay.pokemonshowdown.com/anythinggoes-188438497
http://replay.pokemonshowdown.com/anythinggoes-188448834
http://replay.pokemonshowdown.com/anythinggoes-188446239
http://replay.pokemonshowdown.com/anythinggoes-188438497