She's always ready for a joke, no matter how serious the situation.
Later she learned that he had been stood up for a joke.
If she did, it would be no cause for a joke.
But it seemed like the wrong moment for a joke.
Mind you, she may have done it for a joke.
"How do you like that for a joke in a foreign language?"
I care much for jokes but not in the form of address.
On no account use It again, not even for a joke.
That sign over the door wasn't there for a joke.
Two boys were walking up to the sign for a joke.