Reading thru the Silver Age Superboy, I noticed what number of stories ended with this:
The winks are inclined to happen on the tip of secret identification stories; I’m certain there are masses of examples in Superman as neatly.
Right here’s seriously a lot like the “Ending with Iris” bit within the Flash, and the “Bah!” responses from the Joker; a strategy of letting us know the story is over.
Update: Kirk Rental aspects out within the comments that the apply of ending the story with a wink from Clark may maybe simply dangle originated with the Superman cartoons of the early Forties from the Fleischer studios. Right here’s the major one in that series, which does indeed kill that capability: