What's the difference between your first and your twentieth year of marriage?
On your first year, you have nicknames for each other, like sweetie or cupcake . On your twentieth year, you have nicknames for each other, like dream crusher or hope killer.
On your first year, you like to pick fights because you expect to make up and have sex. On your twentieth year, you like to pick fights just so you can sleep in the other room.
(Bill Engvall)