Share 'Things that make you go "WTF?"'

Similar to the "tattoo ignorance" thread, but on a lighter note: what are the things people have said about your tattoos that made you laugh, or wonder if they were a) serious, b) aliens from a distant planet or c) just plain stupid? I get the "is that real?" question a lot. Occasionally I have to rub my arm so that people believe it's really real. I'd say that's your run of the mill a). But ...