People usually use the word "SLUT" to put down a woman for being sexually promiscuous--whether she is or not. It's sometimes used to taunt females who have been raped, and to embarrass girls who go through puberty before their peers.
"Slut" is a great example of the double standard that encourages boys to get as much action as possible, while girls are supposed to be virginal and "good." Usually, when you call a guy sexually promiscuous, he's flattered.
