guy asked a girl in a library; "Do you mind if I sit beside you"?

The girl answered with a loud voice; "I DON'T WANT TO SPEND THE NIGHT WITH YOU!!!".

All the students in the library started staring at the guy and he was embarrassed. After a couple of minutes, the girl walked quietly to the guy's table and she told him "I study psychology and I know what a man is thinking, I guess you felt embarrassed right?"

The guy responded with a loud voice: "$200 JUST FOR ONE NIGHT!!!? THAT'S TOO MUCH!!!"

...and all the people in the library looked at the girl in shock and the guy whispered in her ears; "I study Law and I know how to make someone feel guilty"