I contributed one earlier as the worst I'd ever heard, but I just remembered another that's even worse, so here it is:

In a small town, two gentlemen, unrelated, passed away on the same day. Their bodies were, of course, taken to the local
mortuary along with clothing for the burial.

After the mortician had done his work, the two families were invited to preview the departed gentlemen prior to the visitations.

One of the deceased was wearing his conservative double-breasted suit, the other a somewhat sportier outfit.

Each family thought that the other gentlemen's clothing was more attractive and they asked the mortician if a switch could possibly
be made.

"No problem", said the mortician, "we'll take care of it right away."

Next day, at the visitation, both families were pleased with the attire of the deceased and thanked the mortician profusely for his
time and trouble.

"Oh", replied the mortician, "it really wasn't much trouble, we just switched heads."