There are a number of questions that are asked in just about every Ask Me Anything (AMA) session that takes place on Reddit. One of them is about the preference for taking on 100 duck-sized horses (or just one horse-sized duck). The other? What’s your idea of a perfect sandwich?

The Perfect Sandwich is our weekly feature that pairs scientists, celebrities, politicians, and other icons with this universal question. In honor of Halloween—and because of the nature of the subject’s musical and cinematic body of work—we asked Rob Zombie, rock star and film director behind 2007’s Halloween (and its sequel), The Lords of Salem and the upcoming 31, for his Scariest Sandwich.

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Rob Zombie knows a thing or two about horror.

You can hear it in the music he’s performed as the leader and frontman for White Zombie, as well as on his own as a solo act. You can see it in the relentlessly terrifying The Devil’s Rejects, one of the handful of horror projects he’s directed (he’s also an executive producer on Trapped, an upcoming horror comedy TV series from Starz starring Mila Kunis). You can even experience it by visiting Rob Zombie’s Great American Nightmare, a haunted attraction that runs through Nov. 1 in Villa Park, Ill., outside of Chicago.

That’s why it seemed, well, perfect to twist the AMA Perfect Sandwich question into something a bit more stomach churning.

I think the scariest sandwich that I’ve ever seen is this thing they’ve been hawking on all the Carl’s Jr. ads, and the only way they can sell you this disgusting thing is that they always get super hot girls in bikinis to eat it who in real life would probably never even touch that thing,” said Zombie, who’s a vegan along with his wife and frequent collaborator, Sheri Moon Zombie. “What is it? … You look at it, and you’re supposed to eat it and die.”

That commercial also features something else that raises the burger’s disgusting factor for Zombie: all that water while dining.

“You know that movie Gummo? The kid who is eating spaghetti in the bathtub is so fucking gross for some reason,” he said. “I can’t be wet and eating. I must be dry.”