When one member of a conversation says
something they obviously intend to
sound brilliant, but which is either completely moronic or totally inappropriate, another member can respond with this
line as a way of pointing out said inappropriateness.
Othello: I'm madly in
love with Desdemona, but I fear she's being unfaithful.
Iago: You know, I once had a spicy
burrito I felt the same way about.
Othello: (stopping, with his mouth hanging open and his eyes blinking) No thanks, I already have a
penguin.