Names for sex

There are names to call sex without calling it sex. It is always interesting to see what people call it. Here are a few of what I have thought of and what I have found. What do you call it?

*Doing the freaky nasty
*Buttering the muffing
*Horizontal mambo
*Poke her
*Making babies
*Play chess
*Get down to business
*Hanging out
*Doing it
*Knocking boots
*Rubbing one out
*Playing house
*Wrestling
*Meat injection
*Doing the naughty
*Going to work
*Studying biology
*Playing contact sports
*Horizontal bop
*Banging
*Gitting buzy
*Doing the do
*Pollinating the flower