This kind of thing happens all the time to me, random people will just ... say rude shit at me as I walk past. Anyway Tig Notaro really nails my thought process afterwards in this bit.
I always think the same thing. "Really? Out of all the possible scenarios that's what you decided to say to me?"
P.S. Have you seen her thing with the stools? When I saw it on Conan I got really annoyed but by the end of the ridiculous thing I was laughing so hard. (The entire thing is funny but the stool thing starts at about 3:40)