When you kick off

Over breakfast one morning, a little boy kept staring intently at his  grandfather. '1s anything the matter, son?' the old man asked.  'No, Gramps. I was just wondering what position you play in the football  team.' 'What are? You talking about?' laughed Gramps. 'I'm far too old to play  football.' 'Oh,' said the little. Boy. 'It's just that Dad' said that when you  kicked off, we'd be able to afford a new car.'