1) When your girlfriend or any other girl of interest including a potential bang or even your mother starts
bitchin, complaining, nagging, or failing to know her role. In most cases, there is no reason for this act of
crumpin and it usually comes out of nowhere.
2) Any annoyance or
complaint that comes out of a female's dirty mouth.
3) An accumilation of bitching. Even if your best friend is complaining you can tell him, "Stop crumpin. You sound like my girlfirend."
Girlfriend: "Where are you. I thought we were supposed to
eat lunch together today. Seriousy, I'm getting sick of this.
Whaaa Whaaa Whaaa."
You: "Bitch...stop your fuckin
crumpin'. I'm playin (insert your game of choice {ex: FIFA/Madden} here.) I'll see you later."