A very shy guy goes into a bar and sees a beautiful woman sitting at the bar. After an hour of gathering up his courage he finally goes over to her and asks, tentatively, ''Um, would you mind if I chatted with you for a while?'' She responds by yelling, at the top of her lungs, ''No, I won't sleep with you tonight...you pig '' Everyone in the bar is now staring at them. Naturally, the guy is hopelessly and completely embarrassed and he slinks back to his table with a red face. 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 public situations.'' To which he responds, screaming at the top of his lungs, ''What do you mean $200 for a BJ?''