I look after my 2.5 year old DNephew for one day every week and I had him yesterday with no issues (as usual, he's a great little boy, really well behaved and we have a great time). This morning I received a text msg from SiL stating that the following phrases were banned around DN: "I'm going to stab you", "I'm going to cut you" and "I'm going to cut your face off". I was pretty shocked and asked where had he heard that from to be told "From you - he hears everything". I replied that I had never said anything like that or let him see anything on television that would have that kind of language. I was told that I say it all the time without realising and that it's in my repertoire of usual responses!
I am completely shocked and upset. I have never said ANYTHING like that full stop, never mind around DN. I have been racking my brains to think where this could have come from. Yesterday we spend the morning with my mum shopping, in the afternoon my friend came round with her little boy who is a year older but his speech isn't that great for his age so pretty similar to DN, we were playing with the kids the whole time and there is no way that my friend's son would have said anything like that anyway.
The closest thing I can think of is that I do say to DH sometimes "I will kick your backside" but this doesn't happen when DN is around.
I am seriously consdering telling DB and SiL that I won't take DN any more. AIBU to be so upset?