When you get your woman (or man) on their knees in front of you. Then you tease them with your cock and get them to close their eyes and open their mouth. You then pull your hard cock to your stomach and let it go. Pachunk is the sound it makes when it slaps them on the face.
Man my wife really hates it when she goes to give me head and I pachunk her instead.
by k-e July 31, 2009