It is relentless 'poopoohead' 'pooface' 'bum' 'bumpooface', smelly poo' etc etc. To absolutely everything. Pretends to Pull his trousers down and goes 'bumbum'. Says it to all of us in the house. Laughs. Nothing is working, telling him off, sanctions, ignoring (if I ignore he comes up to my ears and says it rut in my ear).
I just shouted at him
as I've had enough.