Psychology and law...
A guy asked a girl in a library:
Do you mind if I sit beside you?
The girl replied 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, he was embarrassed. After a couple of minutes, the girl walked quietly to the guy's table and said:
I study psychology and I know what a man is thinking, I guess you felt embarrassed right?
The guy responded with a loud voice:
$500 FOR ONE NIGHT? THAT'S TOO MUCH!
All the people in the library looked at the girl in shock. The guy whispered in her ears:
I study Law and I know how to make someone feel guilty.