The "Vagina"
Lie down on your side and hold onto your penis with the Backhand grip. Roll over further and brace your hand against the bed, and thrust your penis in and out of your hand. This closely mimics the movements of intercourse. It's a very different feeling to masturbate by moving your pelvis rather than your hand. It's also fun to put your other hand down and feel your scrotum moving back and forth as you pump in and out of the "vagina."
