[svxter]

It's the French Revolution, and two guys, a cleric and an engineer, are being led to the guillotine. They put the first one in it, and pull the rope. Nothing happens, as the blade hangs up. They try again, and still nothing happens. After the third failure, they give and release the clergyman, who goes away savying it's a miracle.

They put the engineer in, and pull the rope. Again, nothing happens, whereupon the engineer rolls over and looks up at the knife. After a few minutes he says, "I think I see your problem".....