Serious: It means having a girlfriend or wife.
Funny: "My name is no, My number is no ..."

Serious : A silly or foolish person
Funny: Why does a man of your position keep chickens? Well, I'm in politics, so the chickens talk a lot more sense.

Serious: to get in trouble, to put your foot in your mouth.
Funny: Patient to Doctor: it was the only seat left in the sauna, and I didn't want to make a scene....