Once both the female and male are both completely naked. the female counts how long it takes for the males dick to get hard without touching him

the thing that you don’t have when you’re phones percentage is over 20

Furious, two-handed masturbation. Insipired by a certain song from the early 70's, whose hand motions include grabbing an imaginary flagpole with both hands, lifiting said as quickly as possible above one's head, and then bring the hands back down the pole again.