So my FIL who is a bit of a spoilt child decided to cut a chunk out of my DS aged 11 hair with the dog clippers as a joke. DS understanding a bit upset by this. I'm feckin fuming but I know if I say anything it will cause a major row. He won't say sorry and has told DS to man up. Aibu to think this is a little unreasonable. DH defends his dad constantly even though he realises that he can be a bit of a prick.