Did you hear what I said?

'Can I have something to eat, please?'
'I'm driving at the moment so it's a little difficult'
'There's a biscuit in your bag'
'I know there is but we'll soon be home'
'But I'm hungry, why can't I have it now?'
'Because it's a chocolate biscuit, it's sticky and I don't want it all over the seat, my bag or your clothes'
'OK, I'll wait then'
Did she wait? Clearly not!!