DS 2.4 is really very rude to DP's mum. Sort of the same with my Mum but if my Mum makes an effort to interact it stops.
DP's mum is quite disabled and quite gruff as an individual so doesn't play with him and tends to be quite verbal.
He basically gives her a good talking to...I pretend he's just garbling on but I can understand and he's saying 'don't touch my toys''don't sit there that's my seat' etc. She gets his generally negative manner and says 'we are grumpy today' or something similar.
Anyway...is there anything I can do at his age?