All these things get on my tits too. I cheer myself up by taking my 80 year old Mum to the supermarket and we enjoy parking in the spaces marked "Parent and Child".
Good one - me and my dad do this at Tescos, and chuckle about it, too! I've even taking to cackling and chortling which is probably a bad thing : (
One specially enjoyable occasion was when the bloke pushing a great long 'train' of trolleys back to the store challenged me as I was locking the car..."You can't park here" he said indignantly (and in my minds eye he was indeed wearing an ARP Wardens white tin hat, and he did utter the name 'Mainwaring' ).
I pointed (to my shame, gleefully) to my dad in his mobility scooter, and then to myself, saying in a voice of ineluctable conclusion:
"Father... and son"
And then I smiled, for I had awaited this day for quite some time...
But now, I realise its not so clever being a moaning old git when you actually
enjoy being a moaning old git - so I'm fighting it!