Bending a girl over an ottoman and penetrating her from behind during intercourse. After you've climaxed, proceed to flip her over the ottoman the rest of the way, so that she lands on her back.
I love banging TV Land girls; they get off on van dyking.
Joe: How'd you get the shiner?
Pete: Well, I van dyked this girl last night, and she didn't appreciate it; so, she punched me.