Maybe leaving Mark in charge of Tully is a bad idea?

So, as I said in my last post I've been away a bit recently with work. I think Mark is getting his revenge though. Whilst I've been away he has taught Tully a new 'What noise do xxx make?' question and answer... Mark says 'Tully, what noise do mummys make?', Tully answers 'Nag nag nag'... Mmmmmmm...