A guy is looking for a place to sit in a crowded library.
He asked a girl in a university library: "Do you mind if I sit beside you?
The girl replied in a loud voice: "I DON 'T 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 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 loud voice: "$500 FOR ONE NIGHT? . . . THAT'S ROBBERY!"
All the people in the library looked at the girl in shock.
The guy then whispered in her ear: "I study law: I know how to screw people."