Ds2 (3) was just whingeing for a biscuit - I'm trying to cook dinner and do ds1's spellings with him etc. so I said, rather crossly, "I am cooking dinner - you are not having a biscuit."
His response, said in the exact intonation I use?
"B..loody Hell."
I suppose it could have been worse but, note to self, curb your language!