Or is he too young?
What he says isn't extremely clear but he says it a lot.
He says mmmmm-y like mummy but he can't say the um part, he says it whenever he's upset, and he did it non stop this morning in his cot until I went in.
My mum said "where's mummy" to him yesterday and he immediately moved himself around to look at the door (I wasn't there so maybe looking to see if I was there?)
Could he be saying it or am I being daft? 