Preceeded by a number, which is the number of jugs of beer a guy would theoretically need to drink for a fugly girl/woman to look attractive. Obviously, the higher the number, the fuglier the girl in question is.
"Urgh. That fugly bitch over there must be at least a 10-jugger."
def #1. very largevagina. or def #2. any person on call of duty 4 or 5 that uses the juggernaut perk
exp.1- damn tommy did you see that strippers vag? haha ya i did it was a jugger pussy... exp.2- what the fuck teddybear14 it took me all my ammo to kill you... your such a jugger pussy..