[D&D Adaptation Question] Swallow Whole rules and mechanics?

[Bruno]

Originally Posted by Adelus

3) While silly, it is true to the rules and genre conventions that after slicing yourself out of a creatures stomach, its wound closes via "muscular action" or some other nonsense.

That's an innovation of about 3rd edition D&D-ish RPGs, for the convenience of GMs. It might be nonsense, but it's very convenient nonsense. YMMV.