I'm sure I've said worst things but I remember my friend getting engaged (this was 10 years ago) and coming into the office the next day, showing off the rock, and telling the proposal story. When she was done, everyone started going "wow", "amazing" etc and I meant to say something else but somehow the word "cheesy" (!) slipped out of my mouth. Omg, there was no taking that one back. I totally spazzed and said the wrong thing (can't remember what I meant to say). I still got invited to the wedding but was sat at the loser table all the way in the back. Guess I deserved that! We are still friends to this day so it's ok.