Know what's really in your man's pants

Yes, it all feels good when handled, but a discerning touch goes a long way. "The upper areas – near the head – respond to friction," says Ian Kerner, Ph.D, sex therapist and author of He Comes Next. "The lower parts – nearer the base – respond to pressure."

To provide the perfect combo (not that you asked): During foreplay, tightly encircle the base of the penis with your fingers. The pressure restricts blood flow out of the shaft, making his erection harder and delaying orgasm. Supply friction at the head with your mouth or other hand and – ta-da! – we promise to take out the recycling for a whole month.