A man had a deaf woman as a wife, so in order to communicate with her; he had to use sign language. 

They soon got quite confused whenever either of them wanted to have sex. 

They made up a sign of their own for the action, and then the husband explained through signing, this to her:

“When I want to have sex, I will pull your left nipple one time.”

She nodded in understanding.

“When I do not want to make love, I will pull your left nipple twice”

She nodded again.

“When you want to have sex, you pull my dick one time.”

She smiled and nodded.

“But when you don’t want to have sex, pull my dick 357 times.”