Farting nude would have to be totally acceptable! When I was young for some reason we would have farting contests after school at someone's house sometimes. The best farts were always the ones that were "sans pants" as there was nothing to block the sound that permeated. I also got used to others seeing my ass in public - so I guess this story covers both topics - farting nude in public! By the way, if everyone has the same ass parts - shouldn't it be ok to show them in public? LOL