What are the two jokes Montag recalls?

From the text:

Wasn't there an old joke about the wife who talked so much on the telephone that her desperate husband ran out to the nearest store and telephoned her to ask what was for dinner?

And suddenly she was so strange he couldn't believe he knew her at all. He was in someone else's house, like those other jokes people told of the gentleman, drunk, coming home late at night, unlocking the wrong door, entering a wrong room, and bedding with a stranger and getting up early and going to work and neither of them the wiser.