This originally meant, literally, a bag to carry a device that women cleansed their vaginas with. It's now used as an insult, mostly against males, similar to calling them a jerk, bastard, etc. What the insult specifically implies seems to depend on regional vernacular.

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.

A bag used for your vaginal crevece... to clean it out and such. Used sometimes when umpires at softball games are idiots and dont know what they are doing.

an ex-boyfriend that was nice to you and after breaking up is completely rude. He continually wants something fromm you but not a relationship.

Its a thing girls use to wash their pussy.