I pledged that the "dead monkey sketch" would be the worst joke I told on here. Well, have no fear, people!
This one is much cleverer!
A couple, husband and wife, are in the hospital having a checkup on the pregnant wife. All seems well; before they leave, the doctor offers an experimental treatment for childbirth, whereby the pain of the childbirth will be transferred to the father. Both parents discuss it and agree.
The day of the birth arrives, and the treatment is applied. As the hours of childbirth wear on, the wife notices no pain, but also notices none on her husbands face. She asks, and he professes that he's a little uncomfortable, but nothing worth noting. She does not seem at all happy about this. Aside from this tension, all seems well, and the child is born, loaded into a baby carrier, and taken home.
They find the mailman dead on their front walk, face locked into an expression of complete and utter agony.