Because it's a moth... with improbably sized testicles.

Funny

I thought this was a funny piece of flash I think what made it funny was not just the size of the cojones on the moth but the fact that it's impossible for him to fly unless he flys under the same principle of the bumblebee if he doesn't know he can't fly then he can continue to fly..lol I really liked the movie it was a bit too short but still well worth watching.

well it certainly short

Eh it wasn't too bad. but I think you got carried away with the word mothBALLS, could've been worse though (I guess)