Definition 1: When you're ramming a girl from behind, stick your thumb in her ass, then wait a few minutes or distract her by fondling her hair so she forgets that you had your thumb in her ass, then stick your thumb in her mouth and make her suck it.
Usage Example: She had no idea how bad I sanbennied her until we were done.
Sanbenny
Definition 1: When you're ramming a girl from behind, stick your thumb in her ass, then wait a few minutes or distract her by fondling her hair so she forgets that you had your thumb in her ass, then stick your thumb in her mouth and make her suck it.
Usage Example: She had no idea how bad I sanbennied her until we were done.
