This might be named after the barrel size known as a butt, or it is in fact named after the largest muscle on a person for some reason (but there is a place that has a name that's something along the lines of Accident or Mistake or something like that)
Chocolate pizza...?
I'm not even Italian but the part of my brain hidden in a random cupboard in a trenchcoat and is actually a Harlequin will find whoever did this food crime but every other part of my brain will add it to my library/dungeon/hall of shame of cursed foods