Jackface 

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?"

Jackface by Bob the Rook July 30, 2008

jackface 

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."

jackface by Captain Ed August 6, 2004

JackFace 

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!"

JackFace by Chris Alcott January 11, 2005

Jackface 

One whose face is of Jackish quality.

My friend Bob was being a real Jackface the other day.

Jackface by Odisirus November 24, 2006

Jackface 

This is a polite way to between SmartASS and JackAss to be used in public area where you need to watch your language

Stop being a jackface

Jackface by No_Mercy July 18, 2018

Ultimate Jackface 

The Ultimate Jackface is a meme from the Lostpedia Forums in which the member JoeyeoJ discovered a moment in the penultimate Lost episode "What They Died For" in which Jack Shephard, played by Matthew Fox, looks directly at the camera. The original poster continued to post various pictures, including Lost screenshots, in which the face is inserted into the shot. Sometimes text is included and sometimes they are in a multi-panel form like a Dinosaur Hed, a similar meme from the Lostpedia Forums. Other members of the forum have also taken to making these. The name references the various faces that Matthew Fox makes while playing the character of Jack, which have become known as Jackfaces.

Have you seen the Ultimate Jackface yet?
No, what is it?
Dude, it's crazy! Foxy looks directly at the camera!
He breaks the fourth wall? In Lost?! I gotta see this!

Ultimate Jackface by Yossarian2342 May 25, 2010

JuckFace 

The traditional foul weather gear worn by Juckets located in Freetown, Lakeville and Rochester areas of Massachusetts. This "rain gear" is made from typical household trash bags with three strategically cut holes- one for the Jucket's neck/head and two arm holes. In the not so unlikely event that a particular Jucket may have lost an arm in a combine accident or when a car fell off the cinder block while the Jucket slept underneath in mid day slumber, the Juckface can be simply cut with one arm hole. Color of JuckFace gear is white or heavier gauge black in winter months when weather is more severe.

Hey, yo...check out Eric in that kick ass JuckFace, he's ready to go fishin, rain or shine.

JuckFace by Slim1967 August 25, 2012