Nudity at the Game
I can see three reasons for it.
1st. Involves an activity we can't really talk about on a family forum. The kids would actually enjoy it, but it would make their parents uncomfortable. Modelled in D&D it would involve Sense Motive, Diplomacy, and (for bad Performance checks) Bluff checks.
2nd. It's really hot and really humid and the airconditioning is on the fritz. The game would then be held in the shade outside where we could catch a breeze and chat with the neighbors in the same state of undress.
Obviously both would mean little, if any, actual gaming. D&D gaming that is.
3rd. The group was comfortable with it and had a history of casual nudity in other circumstances. But no jibes about the disparity between appearance and Charisma.