Some cool dude talked you into doing it, but later you're sorry.
It was over in two minutes.
It was four years ago and now you're ashamed to admit it to anyone.
You thought it was going to be like totally awesome but in reality it was disappointing.
He didn't keep any of the promises he made to convince you that he was the one.
You look at all the others who did it and realize you're in bad company.
You get stuck with the check afterwards.