Thanks Tim
don't think he has had world war z yet, will have to check.
He can probably cope with a bit of sauciness, he is at the age where he is starting to learn things from friends, but doesn't really want to talk to us about it, apart from trying to bring inuendos into every conversation
now, just need to stop myself from curling up on the sofa with a book. Need to swim tonight, but swim session doesn't start till 8:15 so there will be a massive temptation to just go to sleep on the sofa and not bother!