A: Once when you tell it once when you tell her the punchline and once when she gets it.
I asked him. He said, "Tell her about my job."
It raises a stink!
It cracked.
Disclaimer: I don't know how well this joke will work in english. What's yellow and lies in a pond? An excevator. You don't think this is funny? Neither does the operator.
The punchline
A Bobbitt
Tell her a joke at Christmas