I'm lucky in that I've never had anything nasty said to me by my kids.
There have been some things that hurt though.
Like my perfectionist DS2 who is very hard on himself when he tried new things and doesn't get it right. He always says things like "I suck at this", but once I remember him saying "I suck at this, I can't do anything right, and I hate myself". He got a talking to about that one.
The other morning I was upset/angry all day about a comment my DS1 said while walking out the door for school. He has Aspergers and has a lot of catastrophic thoughts, which really upset me because this warped view is his actual view of real life. Anyway he was sulking around and I asked him what's wrong and he got all teary and said "You call me mean names all the time!!" I was soooooooooo annoyed. I stewed on it all day. He did apologise to me in the afternoon but I know he was just doing it because it was expected of him, I have no doubt that in his little head he believes I call him names. Pretty hurtful as a parent to know that.