cari istilah yang lo mau, kaya' ethered:
 
1.
A term used to describe the contorted facial expression Matthew Fox's character, "Jack Shephard", makes when he is angry, yelling, or just plain acting crazy on the television show "Lost"
"Did you see that awesome Jackface Jack made when he was shooting at 'The Others' last night on Lost?"
dari Bob the Rook Jum'at, 26 Mei 2006
 
2.
A moron, a dumbass, someone who is oblivious to the fact that there mere presence makes others want to vomit.

A sly way to insult someone without them knowing it.

Someone who thinks they are cool but just ends up making a fool of themselves.
"Bubba is such a JackFace!"

"What's up Jackface!"

"Look at that guy trying to pick up my grandma, what a JackFace!"
dari Chris Alcott Selasa, 11 Januari 2005
 
3.
One whose face is of Jackish quality.
My friend Bob was being a real Jackface the other day.
dari Odisirus Jum'at, 24 November 2006
 
4.
1. A good insult for someone when you're bored of the standard insults and you want to try something new.

2. A term used to describe someone who is being a jackface.
"That guy Don is a real jackface."
dari Captain Ed Jum'at, 06 Agustus 2004