Facebook photos adults will put up of themselves at parties. They lose any sense of shame. One guy posted a picture of himself in nothing but a diaper. The other benefit is the office worker who dresses up for the office party. It's all fun and games while at work, but they have to commute and run errands in their costume. Last year I saw a Witch in her mid-40s driving a Honda civic to pick her kid up from school. She looked embarrassed when I started laughing.

I also find it amazing that so many normal modest women take the opportunity to dress like a Salt Lake UT. I'm sure you single guys don't mind that though.