Boobie Snap

When a female (or in some instances a male) is pulling up her or his sleeve with force and whose hand slips hitting his/her boob. Applies mainly to the female sex because its more hilarious.

Jim: Hey, you wanna get some coffee?
Esmaralda: Sure, hold on let me pull up my sleeves.
*snap*
Jim: Daaamn girl, that was one hell of a boobie snap!
*Esmeralda lying on floor*