They stared at me and the mother said "It's a baked potato." And I was saying "Oh, interesting, a baked....what is it again?"
And she was like "A potato."
And I was like "A 'potato', oh interesting. Never heard of a potato, looks pretty good."
And then they didn't see I was clowning, but thought I really did not know what is a potato. So I knew I would be very shamed, humiliated, depressed, and disgusted if I admitted to making a bad joke, so what I did was to act as if it was not a joke but I committed to the act of pretending I didn't know what a potato is.