Here's a discussion I overheard in the hallways of our local community college. To set the scene: Boy is trying to hit on girl who clearly isn't interested. Girl begins to lose patience.
Girl: How old are you?
Boy: Twenty. How old is you?
Girl (with attitude): Twenty four.
Boy: What dat mean?
Girl: A lot. Goodbye.
Poor guy was crushed, but I had to cheer for her to be smart enough to walk away.