I thought a mukbang was when you and your friends go to a graveyard with a recently deceased person, draw straws on who has to do it. Then the loser (or winner depending on your depravity) puts his open mouth on the ass of the deceased while the other friend jumps on the stomach pushing all the embalming fluid and guts out the ass.

Am I off on what’s going on the Pic?

Edit: Oops my bad. That’s “Munging”. And you gotta have sex with the corpse too.