Tipper tips a generous tip, and then a non-tipper says something stupid like "You should fuck that guy/give him a blowjob for a tip that big" or "That tip deserves a flash at least!" towards a non-nude model.
Lately, being called a milf bugs me because I don't have kids. I know it's meant as a compliment, but it still bugs me because I think some guys just don't know the meaning of the word and call sexy women in their 30's and 40's milfs. I also don't like "Why are you single?" as if there's something wrong with a woman if she's single. I'm happy being single, damn it!