when one moves the hips back and forth causing the nutsack to clap against the belly and or the gooch.

A swimmer

A device used to activate other electronic devices, such as lights by the use of a clap sound. Must be over the age of 60 or simply be unable to be embarrassed (a good test is if you can listen to All Night Long in front of people you don't know). Advertised in the 1980s, but rarely sold.

After you have sex, the dick is soft. When the dick is soft tell her to get on her knees, then immediatly slap your dick across each side of her face. (then you hear a clapping sound)

The "clapper" is the little piece of metal that dangles inside a bell, causing it to make noise when it hits the sides. As such, when a female stands up after sex and wiggles her hips side to side, causing her outer vaginal lips to shake, it is called doing the clapper. (The female version of the helicopter).

When you slap a girl with your dick twice then shut the lights off