Exhibitionist (3.5e Flaw)
From D&D Wiki
A character with this flaw suffers the compulsive need to remove all of his equipment whenever encountering new creatures. The more creatures around, the stronger the compulsion, however the presence of young offspring of the creatures lessens this effect.
Effect: When you encounter a new group of humanoid creatures you are shaken until you remove all items you are wearing, or until the creatures are no longer present. Once you have spent at least 1 round fully naked, you may don your wearable items.