A man lives on the 14th floor. Each morning when he goes to work he takes the elevator down, all the 14 floors.
When he gets back in the evening he takes the elevator again but only to the 10th floor. To go up the last 4 floors he takes the stairs.
The man in question is abnormally short, so he cannot reach the button requesting the 14th floor when returning to the block of flats in which he lives. Therefore, he can only request the 10th floor, because that is the highest number hecan reach.
And yes, I've heard a variation on this one before.
That's so easy I think I'm going to implode.
It's because when he gets home at night, he is invariably dying for a dump because he's always too embarrased to go at work. It stinks so bad, that he just has to get out at the 10th floor or he'll puke up a kidney.
Is his name Sidney? I think I know him.