Being made of magically dense cake and jelly means funny things can happen if I share a bite~! Aside from the obvious effects of all those calories and possibly becoming a dessert creature yourself, snacking from different parts may have extra effects if I so choose~
Some examples:
Head: Gives you a sugar rush with no crash or becomes addicted to sugar
Body: Extra dense and at risk of being nommed yourself if eating directly (see below*)
Tail: Helps compress extra weight allowing the eater retain a pearish shape no matter how much is eaten
Arms/Hands: They're jelly filled, so the eater will be jelly filled too!
Floating Hands: Will simplify, smooth and blank eater's features
Bell: Become a little dessert animal/pet with their own bell!
Apron: That's cloth silly! Also you're my maid cakebold now
Effects are more drastic the more of a specific part is eaten, and increase in duration as well.
*Getting nommed by belly maw may result in: Dessertification, reclamation of mass, or in extreme cases temporary tailification as the eater is reconstituted.