" I went to KFC and when i was in line, I saw a roach run across the floor. That was such a BONER KILLER.So I left."
Example 1: You meet a cute girl/guy. They stink.You all of a sudden loose all
attraction.
Example 2: Your at a party and your having fun. Then some idiot decides to start a fight. It gets
out of control, the cops come over, and you get arrested. Your night is ruined.
Example 3: You have a crush on someone and then you come to find out
something terrible about them (i.e. STD, hoe, player, too many kids, married). Ruins the image you had in your head about them.