Sex Sayings?

[Eway]

I've just learnt the saying "A Condom a Day, Keeps the Doctor Away".
I find it very interesting and would like to know if there are more sayings about sex in English?
(or any other languages?)

[RonBee]

That one is, no doubt, a play on the more well-known an apple a day keeps the doctor away. As for whether there are any others, well, anybody can make one up.

:)