"Busy With Cock in Mouth"
What a chick says to dudes she hates, when they want her attention.
Especially useful when she's already digging her Sweet Baby Boy.
Can be used to describe any sexual encounter, or major screw up.
May also show optimism: "I'm hanging with Matt, gonna be BWCM all night."
NOT to be confused with "Bored With Cock in Mouth," for this is an IMPOSSIBLE scenario!