[flying Elvis]

Yeah, I once got a whipping for calling my sis the F word. In retrospect, big-boned or healthy would have been a better word choice.

[HungarianGypsy]

I remember watching Star Trek: Generations when my then 4 year old repeated Data saying, "Oh sh--" I told him we do not say that and not to repeat it again or I would wash his mouth with soap. A minute later he said it again. As I dragged him to the bathroom he kept saying, "Not again." It was the first time it had ever happened to him.
He is now 10 and has not sworn to this day. I am the one with the potty mouth. I say, "flippin'" (that's the exact word). Of course, my 4 year old keeps telling me how he heard a neighbor boy say "shut up".