She responds by yelling, at the top of her lungs, "NO,I WON'T SLEEP WITH YOU,TONIGHT!" Everyone in the bar is now staring at them. Naturally, the guy is hopelessly and completely embarrassed and he slinks back to his table.
After a few minutes, the woman walks over to him and apologizes. She smiles at him and says, "I'm sorry if I embarrassed you. You see, I'm a graduate student in psychology and I'm studying how people respond to embarrassing situations."
To which he responds, at the top of his lungs, "200 DOLLARS? YOU'RE OUT OF YOUR MIND!"