This woman goes into a funeral home to make arrangements for her husband's funeral. She tells the director that she wants her husband to be buried in a dark blue suit.
He asks, "Wouldn't it just be easier to bury him in the black suit that he's wearing?"
But she insists that it must be a blue suit and gives him a blank check to buy one.
When she comes back for the funeral, she sees her husband in the coffin and he is wearing a beautiful blue suit. She tells the funeral director how much she loves the suit and asks how much it cost.
He says, "Actually, it didn't cost anything. The funniest thing happened. As soon as you left, another corpse was brought in, this one wearing a blue suit. I noticed that they were about the same size, and asked the other widow if she would mind if her husband were buried in a black suit. She said that was fine with her. So... I switched the heads"