There are four kinds of sex:
House Sex:
When you are newly married and have sex all over the house in every room.
Bedroom Sex:
After you have been married for a while, you only have sex in the bedroom.
Hall Sex:
After you've been married for many, many years you just pass each other in the hall and say "Fuck You!"
Courtroom Sex:
When your wife and her lawyer fuck you in the divorce court in front of many people for every penny you've got!