It should be socially acceptable to play possum in public, when you hit your limit. If you're curled up in the corner, because you got overstimulated, I'll bring you a blanket and a snack.
@RickiTarr
Not a popular thing, and I know it's unhealthy, but I find smoking my pipe works quite well. People look at you, think, "Oh, doesn't he look peaceful?" and leave me alone.