Appears to be dervived from a mixture of the words 'penis' and 'arse'
Has several similar meanings,
1) An offensive term for an inept person.
2) An insult, with the direct meaning being a penis with an arse shaped bell-end
3) An insult indicating that the accused is both a penis and an arsehole
"What the fuck are you doing you pnarse?!?" or "Hey pnarse, how's it going?"
another term for a station wagon, mini-van, or any other kind of vehicle that is targeted at the "family" demographic(also M.A.V.)
"Tactical advantages aside, the M.A.V. is top of the line for the holy warrior troop transport manufactured by the Church of Latter Day Saints Military Industrial Complex. Also great for family trips...to heathen lands."