a joke
Telling a joke and someone taking it seriously but are too embarrassed to admit it, so they try to cover it up with another joke.
He told a joke, and I took it seriously, so I had to make another joke to save face.
She said a joke and I was too proud to admit I didn't get it, so I told another one.
They said a joke, I got confused, and I told another one to cover it up.