I'm just the same - and it does infuriate me and DH
A friend had her first baby same time as I had my 3rd. One day, phone rings, she's upset, can't cope etc - can I look after her baby (newborn) for a couple of hours????
Yes I say - bring him round! So I'm looking after 2 newborns, a 22 month old DS and a 4 yo DD! DH was NOT impressed when he found out.