An upright blumpkin in a bathroom stall, in which the female collects the feces of the male and smears it on the walls while simultaneously performing fellatio.
My girl and I tried a Waka Flocka Stain yesterday while listening to Hard in the Paint, it was poppin'.
Kaci and Maggie say "waka waka waka" while putting their hands infront of them. (alternate hands moving back and forth like a turntable-ist does to make the scrathy noise) Also used when you have nothing better to say.
Only used by cool people :)
"Damn, I wish I were cool enough to say 'waka waka waka' with such style and grace"