No fun inside joke can exist on the internet anymore before it grows into a Frankenstein monster of face-palming douchery that is just unbearable and sad. Everyone loves an in-joke, and that's fine. The first guy who got Rickrolled was probably so blown away that his hair literally slicked back in the wake of some fierce metaphysical breeze. The first person who said "I love lamp!" who wasn't Steve Carell? Goddamn comedy Mozart. But it was ruined. Just like the first guy who decided to do something with bacon besides eat it next to eggs, and instead make it into a towel pattern to sell it on Etsy. The same way McDonald's ruined Dan Harmon's little joke about a bullshit condiment that not one goddamn person besides Dan Harmon even remembered existed.
The internet cannot let an inside joke be. It can't. We didn't want to write about this. We actively avoided the topic of Rick And Morty and that damn sauce for weeks now. When McDonald's started offering jugs of this shit in bulletproof moon cases for only five people in the universe, we turned our backs. But it won't die! This isn't a Romero zombie that dies with a headshot; it's a Return Of The Living Dead O'Bannon zombie that never dies no matter how much you dismember it. It left the zone of just a fun thing one Rick And Morty fan could joke about with another Rick And Morty fan and became a turd golem. A corporate-sponsored one.
The fact that McDonald's is producing this sauce now, unbidden, to capitalize on the fanfare of the cartoon should be all the motivation you need to run screaming into the hills. Corporate sponsorship is never cool -- we all know that. Imagine you're at a party talking to a friend, and you mention that you bought a new shirt but it turned out to be too big, and then a random billionaire you don't know pops his head between the two of you and says "That's what she said!" and then laughs, and keeps laughing until it's clear he won't stop until you also laugh. That's what McDonald's just did with this goddamn sauce.