Because he found out his friends thought he was a little crabby!
They both think they can fly.
Mistress: Are you done yet Wife: Beige... I think I'll paint the ceiling beige...
A Happy Medium. Sorry, a played around with the wording of this a lot and couldn't find anything better. Please suggest a better phrasing.
Fingerprints.
Because they're both steaming and wet when you enter and they don't mind if you bring friends.
Because he's married.
Crabs on your organ.
You're two shellfish.