One who is in constant need of sex (in the form of intercourse, masturbation, etc.)\n> 1. d00d: I can't stop humping my pillow.\n> mang: d00d, you're such a sex fiend.\n> 2. d00d: Did you knock that pussy hard?\n> mang: d00d, I need more pussy!\n> d00d: Mang, you're such a sex fiend.\n