The act of slapping your dick on your stomach before/after masturbating. To grab it at the base and swing it towards your stomach to produce a slapping sound.
When I was getting warmed up to fap last night, I did a Tummy DrumDongSolo just to get more in the mood.
When people--usually high school and college students--attempt to hide the fact that they are texting by holding their cell phones on their laps beneath the desk.
Careful dude. Prof. Bilbs is wandering the room looking for tummy texting.
I am totally tummy texting in most of my classes this semester. It's solid.
Tummy sticks is the situation, commonly referred to as a game, in which two erect men cuddle closely and face-to-face causing their two erect penises, or sticks, to push upwards between their stomachs, or tummys. Sticks combine with tummys, hence the name "tummy sticks."
Chris: Hey Grant, wanna play tummy sticks?
Grant: Let's do that! Let's do exactly that!