In other words, butterfly wings is the term for when a females genitalia a.k.a. outer lips are so stretched out that it resembles butterfly wings.

The Nussy, or the “nose pussy”, if you will, was discovered during the corona virus pandemic of 2020. People that had to be tested for Covid-19 had to have their nose swabbed right where the brain connects, which often led to people rolling back their eyes and gagging.

A nose-swab-fetish developed from this, because we, as humans, ruin everything.

When pussy lips are so big they flap open and have the appearance of "Butterfly Wings"

When a tiny bit of poop comes out by accident and then smears on the inside of the butt cheeks. If you pull the butt cheeks apart the poop smear resembles butterfly wings.