thigh dimple

A crater- like indentation, found on or around the thighs. Convinient when looking for a place to temporarily store sauces, such as katsup, for dipping purposes. Usually found in multiples. May vary in size.

My, Susan! How smart of you to use your thigh dimple instead of a styrofoam dish for your sauce! Smaller carbon footprint.

or

Hey, Cindy! Slide that thigh dimple over my way... my chicken nugget is dry!