Are topologists the greatest threat facing humanity?

Skin is only on the outside
on the inside it's epithelial tissue
the inside of your mouth is same material as the inside of a vagina
tldr we are all cuntfaces

You're neglecting the nose.

Alright, this torus then.

Air is also a fluid.

what about ears ?

Shouldn't the nostrils should be a pair of pants?

As far as I'm aware, ears don't connect to anything. It's just a deep depression.

You cannot have half a hole. It's either a hole or it's not

Ignoring the nostrils.
Two hole torus master race.

If your ear drums ever break there's a clear path from ear canal to nasal cavity. Also don't forget the ducts that carry moisture from the eyes to the nose.