Short for narcissist/narcissism/narcissistic
They're a narst.
The narst is strong with them.
Why are they acting all narst?
When you go down on a girl (or guy) and there's lil bits of toilet paper stuck to their butt, pubes, taint, hole, balls, lips, clit, area and you have to work around it.
Dude I ate her out and I ended up with a mouth full of HÅjshiflés!