Not a post, but I basically saw this same thing happen in a yt comment thread of a reaction video for a show. Someone basically did the whole "x did y, probably" kinda joke and someone had to come in and ruin it.

Edit:

I'm wrong. I found the comment and it's more of a "x didn't do y, but are we gonna wait until x does?" kinda joke. Also, the joke ruiner just had to make the joke accurate to the character/situatiob in the show because clearly that made the joke funnier, am I right? Ugh...