Just that!
8 year old boys in the afterschool club and my son tells me on the way home that his classmate came up to him and said "your mum is fat"!!
This boy's mum would be mortified if she knew but he'd obviously lie so there's no point in telling her.
However, it's really made me feel sad! I know it shouldn't but it has. Stupid isn't it?
Oh well, I shan't be taking that boy to the park again!