Re: Swim, swim, hungry...
I would actually think big monstrous centipedes WOULD attack baby ones that they did not hatch, and maybe even ones they did. But that's just me.
I can't say I'd ever use this, since I don't run humor/joke based campaigns, but it looks well constructed for one.
And before you ask, anything with a "hero sense" I consider to not be serious at all. That's just me, though.