When you nut inside your friends bussy, pull out, put a firecracker inside, light it, say "bow chicka wow wow" and wait for the back blast to splatter on your face
Porno groove. It is used generally as something to point out sexualy (unintentional) phrases or actions. It originates from the way the backround music in porn sounds.
"No body wants me, I'm not anyone's friend"
"I WANT YOU!
"Bow chika bow bow!"
"Ew, shutup! You know what I ment!