Sentence 1: My roommate, Rob, and I used to prank call girls on campus. 
 Sentence 3: We'd then tell the girl we were in love with her 
 Sentence 4:  Well, one of these girls asked if she could come over and meet us 
 Sentence 5:  When she arrived, we realized it was my roommate's sister! 
 Option 1: we had the police called on us a few times and were asked to stay off the campus. 
 Option 2: We'd randomly call a girl, pretending to be in one of her classes.