Cards in the Bicycle Spokes

This one is different. Hold your erect penis at the base with your left hand (right if you're left-handed), and spread apart the fingers of your right hand. Holding your penis straight up, move your right hand back and forth so the head of your penis bumps against your fingers rapidly. If you've ever put playing cards on the spokes of your bike (to make it sound like a motorcycle), you'll know where the name of this technique come from! No lubrication is necessary.