作词 : ONeill so you think you're so clever, never in doubt, but i've seen you two together, fooling about, don't get me wrong now, i've seen what you are, mummy wouldn't like it, it's gone too far, got to - keep it in the family learn to - keep it in the family have to - keep it in the family want to - keep it in the family playing with each other, its your favourite game, you never try to hide it, there's no shame, you'll soon be discovered, what will you do then, family entertainment, will come to an end, got to - keep it in the family learn to - keep it in the family have to - keep it in the family want to - keep it in the family