huh

From what I understand in cakeverse, the "cakes" entire physical being as well as all secretions are sweet tasting to a "fork". So yes, cannibalism is a thing in extreme cases. It's why in most cakeverse stories all forks are automatically treated like criminals because a cake has no idea they are a cake until a fork makes them aware, and making them aware usually ends up with sexual assault or death by consumption. So it is up to the author how extreme they would like the relationship of fork and cake to be.