“A few days ago, one of the senators I know—he’s a very good man—got a text message from his wife.

His wife wrote: ‘When you get home, I want you to come upstairs right away and have a romantic relationship with me.’

And he replied: ‘I can’t do both these things.’

Do you know what he meant? That is, I can’t both go up the stairs and have a relationship at the same time. Did anyone notice? Ha-ha.

I thought it was really a good joke. In fact, the only thing that seemed good to me in the whole damn speech they had written for me was that.”

Explanation of the joke: The joke is based on the ambiguity of the phrase “I can’t do both.” The wife says: “Come upstairs and then let’s have a relationship.” The man responds: “I can’t do both.”

Meaning, Trump pretends that the man is so old or incapable that he can’t even do both things—go up the stairs and have a relationship—at the same time.

At the end, when Trump says that “this was the only good part of this speech,” he effectively mocks the speech that was prepared for him and says he didn’t like most of it.”