chocolate fog

When your fucking a chick Doggystyle, and put your thumb in her butt. Then wave your thumb side to side in front of her nose, while making the fog horn sound. Brrrrrr Rrrrrrr.

Man 1: Hey
Man 2 : What up.
Man 1: I was fucking this chick on P.O.F last night , and I gave her the "Chocolate Fog".