OK - these are the LESS offensive ones that I've picked from the "Joke definitions" list that I've been compiling from email jokes.
Bone of Contention: A hard-on that causes an argument. e.g. one that arises when a man is watching Olympic beach volleyball on TV with his girlfriend. :wink:
Cliterature: 1-handed reading material.
Crappuccino: The particularly frothy type of diarrhoea that you get when abroad.
Frigmarole: Unnecessarily time-consuming foreplay.
Going For a McShit: Entering a fast food restaurant with no intention of buying food, you're just going to the bog. If challenged by a pimply staff member, your declaration to them that you'll buy their food afterwards is a McShit With Lies.
Sperm Wail or Spuphemism: A verbal outburst during the male orgasm.
Titanic: A lady who goes down first time out.
Hand-to-gland combat : Vigorous three minute bout of gladiatorial combat involving a spam javelin.