Apparently this is some kind of alternate imagining on the "House Always Wins" story from the same artist, because the writer of the previous comic bailed so that comic ended abruptly (geez, 6 pages a year, big surprise) and the artist wanted to do more for the Marge/Milhouse thing.
So the previous comic had that one sex harness idea that originated from god knows where, which we don't actually get to see and instead of doing that we have some kind of monkey bar wearable for Marge for Milhouse to play with. Not expecting much from the story but so far the art looks pretty good. Can't wait for the complete comic in 2028.