little man in your mouth
Who you blame when you realize you're saying something that you were just thinking about saying. Then you realize he's saying it and you can't stop in the middle of the sentence, so you finish and then you really regret it.
You: "Hey Jenny do you want"-pause, as you silently curse the little man in your mouth-"to go to prom with me?"
Jenny:"No loser."
Jenny:"No loser."