One day I pushed old Uncle Arthur over. You see, he only had one leg and as he fell I told him "You don't have a leg to stand on". As he fell he hit his head on a coffee table. I think he realized just how funny the joke was but that thought was taken up with the idea that he should have gone with a softer wooden table, because he is now in a coma.
As funny as my comment was is just as unfunny his coma is. Sometimes he takes things too far.