uhh yesss, oogie boogie is so cute. He's always had this charm on the outside, but this filth from within, but for being made out of insects, it seems insects fused to each other work exactly like cells do, so he definitely doesn't behaves like an insect nor has insects ways of hiding under the crevices.

Rihanna didn't have monsters under her bed, but inside her head, or maybe she became one with her bed and loved her bed too much she couldn't tell the difference between who she was and who the bad was.

you never know ;o)

and as with everything in general - just because one cannot prove existence of something one cannot count it as a proof of nonexistence.