A male student is looking for a place to sit in a crowded university library. He asked a girl student: "Do you mind if I sit beside you?"
The girl replied in a loud voice: “NO, I DO NOT WANT TO SPEND THE NIGHT WITH YOU!"
All the students in the library started staring at the guy; he was truly embarrassed and moved to another table.
After a couple of minutes, the girl walked quietly to the guy's table and said to him with a laugh: "I study psychology, and I know what a man is thinking. I guess you felt embarrassed, right?"
The guy then responded in a very loud voice: "$500 FOR ONE NIGHT? ... THAT'S WAY TOO MUCH!"
All the people in the library looked at the girl in shock. The guy approached her ear and whispered to her: "I study law, and I know how to screw people."