my niece used to be fantastic at these..
Dad always used to pick her up from nursery in his van, a fact she found rather fantastic. but not as amusing as him getting mad and biting his tongue when other road users were , shall we say annoying him...
on day, stuck at a junction behind some doddering old dear, he forgot my she was there and blurted out "for F**KS sake woman there's nothing coming"
my niece immediately smacked his leg, and shouted "dont say F**K sake grandpa"
needless to say, my sister wasn't that impressed!