A facial disfigurement. Someone who suffers from 'gloonkey' has a lower jaw that protrudes further than the upper jaw. The word is specifically defined so that if a sufferer pronounces it, their condition is expressed to the extreme due to the gurning involved, and thus other people who see it will understand the meaning on a visual basis.
"have you seen morrissey from the smiths? he has a bad case of gloonkey..."
"i'm sure bruce springsteen has gloonkey..."
"i'm sure bruce springsteen has gloonkey..."
by Nickobrevin August 23, 2006