I was very rarly smacked as a child and if I was I KNEW that I have over stepped that line that pushed mum or dad to far. I will smack my kids if they are really out of line (and it would take alot to push me over I think) and if my mum or dad were looking after them and they did something out of line that I would smack them for then I would be ok with that.

Saying that I think my mum and dad are going to be the sort of Grandma and Grandad that will be the type to be wrapped around my kids fingers and they will get away with murder! Just they way it should be! hehehe