My two DSs seem almost incapable of playing without flinging themselves on each other. Mostly instigated by the 3 year old, it starts out rather sweetly but always ends in someone getting hurt, usually my 5 year old who whinges and squeals in a way which - if I was my 3 year old - I would find most satisfying.
I've started to have zero tolerance on some behaviours like putting hands round necks, biting etc, but I don't want to put an end to something that - at some levels - they both enjoy. I also feel that they're boys and this is just a boy thing that they should be allowed to do....
But how can I stop a bit of playfighting becoming WW3?