An old man gets on a crowded bus and no one gives him a seat. As the bus shakes and rattles, the old mans cane slips on the floor and he falls.
As he gets up, a seven-year-old kid, sitting nearby, turns to him and says, "if you put a little rubber thingy on the end of your stick, it wouldnt slip."
The old man snaps back, "Well, if your daddy did the same thing seven years ago, I would have a seat today."