Using his thumb and index finger, a man first grasps his penis and testicles at the base. Using the opposite hand, he wraps the penis downward, over his index finger, and lightly grasps the tip with his middle or ring finger. With his free hand, he lightly dabs the side of his penis and testicles with a stamp pad, liberally inking both. Then he rotates his manhood 90 degrees, such that the testicles are vertical and the penis is on one side. Then he bursts forth towards his unsuspecting partner, stamping her as many times as possible before she can escape, leaving numerous Mickey Mouse silhouettes.
I surprised my girlfriend last night, I gave her a good mousing.