common medical slang for cock.
Stop calling it a penis, Doctor Doolittle!
The thing that men often mistake for their brain.
"He was only thinking with his penis when he married her."
pleasure making machine for both sexes.
I can wack my penis or I can screw that hot chick with my penis, it's all good to me.
a long shaft connected to a set of dangly balls that provides pleasure through friction.
damnnn that penis' friction felt good