An unmarried friends, a male and a female were debating on an issue.
She was saying, how it is unfair that if a guy has Inte*cou*se with many girls every week, he is legend. But a girl flirts with just two boys in a year she is slut.
In response the boy says, if a key opens lots of locks; it is a master key.
But if a lock is opened by many keys then it is a shitty lock.