It's All Fun and Games Until Someone Gets a Unilateral Orchiectomy

The best way to tap a nut is to ask someone to see what is on your shirt right over your scapula. You say, "Hey it feels like there's something stuck to my shirt." The victim approaches you to get a good look (just to your five o'clock) and leans in close.. Your hand, hanging loose and at full extension, is then in a perfect position to complete the joke. Gently now.

Oh, and there's no difference between men and women.