The few inches of a person's bare midriff that are exposed when the bottom hem of his/her shirt rides up due to stretching or bending. Seen often during tennis matches.
She got out of the car and stretched mightily, offering us a beautiful glimpse of tennis tummy. We had never known that her navel was pierced.
by ganymede2981 September 18, 2011
Get the tennis tummy mug.