megiddo
Explanation
This comic plays on the biblical and archaeological significance of Megiddo. The first panel establishes that "Armageddon" etymologically comes from "Har Megiddo," meaning "Mount Megiddo," referring to the hill/tel in modern-day Israel. A second fact states that "the park was a gift shop" -- implying the actual archaeological site has been somewhat commercialized. The conclusion panel asks "What did you do?" and the answer is that "Guess who brought home souvenirs from Armageddon" -- with a child exclaiming "Daddy!" happily.
The humor comes from the juxtaposition of the terrifying biblical concept of Armageddon (the prophesied final battle between good and evil, the literal end of the world) with the banal reality that the actual location is a tourist site with a gift shop where you can buy souvenirs. The word "Armageddon" carries enormous apocalyptic weight, but buying souvenirs "from Armageddon" makes it sound as mundane as visiting any roadside attraction. The child's excited reaction to daddy bringing home Armageddon souvenirs adds another layer of comic incongruity.