Hard Swap
Allowing your partner to have sex with someone else while not in your presence.

Obscenity
That which is legally deemed offensive to «accepted» standards of decency or morality.

Fertility
The ability of a woman or couple to become pregnant and give birth.

Stir
In the cowgirl (i.e. woman on top facing the man’s face) position, when the woman rotates her groin instead of thrusting up and down.

Scissor Leg
A slang term for lesbian sex where each women grinds her clit against the other’s and thier legs kick like scissors.