The open space between the a female's thighs and groin, usually in a square or triangle shape. These only occur with skinny girls as the thighs can not touch. Also known as a fancy gap.
Ever notice Sarah's dinner bell? You could stick a 2x4 though it and not touch her thighs.
A descriptive term used to describe a loose orphase. In order to reach a climax there must be an action performed similar to the concept of a dinner triangle bell being rang by the ringer rod.
Geez... I am exhausted! Lucy was a total dinner triangle bell... I was literallydoing the helicopter in that bitch! I still had to go home and rough the suspect to get mine! I won't be calling her back!