The Xmas McDonalds ad where the boy spends ages drawing some sort of Bayeaux Tapestry sized pictorial letter to Santa (I think that's what it was, I wasn't really concentrating on that bit) and then the "parents" then allow him - not sure why they're doing this - to carry it through the town centre, grasped loosely on a windy day. Of course the damn thing blows away.
Bad parenting that is. Poor lad's spent a lot of time on that, even if it was a shit idea, but they should have been aware of the danger. Put it in an Asda bag or something.
Then they compound it by rewarding him with a poor quality meal at McDonalds, where the lad makes another picture to say how much he likes his parents.
Oh, also, the McDonalds ad (or was it KFC) where the old couple order in a meal to their door. No way that's happening, not when there's Wiltshire Farm Foods fare in the freezer.
Oh, also, that KFC ad where they're all dancing round the room because they've just been served a £1.99 burger. WTF?
TLDR: All fast food ads.