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

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

jarface

another way of referring the the most elite fighting force on the planet, the USMC. Derived from the word jarhead. fantastic four, steak, and a small amount of peas.

Get over here Gomer, you stupid jarface!!!

jarface by Joe Algebra January 16, 2008

Jakefaced 

To be so keen to get a line inside you, you're prepared to slam your bare face against the soap dispenser without a note and snort away ending up with a face like a powdered doughnut.

Ah man I'm so excited I'm getting jakefaced tonight!

Jakefaced by Jakefaced_all_the_way September 19, 2018

jamfaced 

To be severely intoxicated to the point where one runs face first into the wall and inflicts a nose bleed.

Ellen was soooooooooooo jamfaced last night! There was blood everywhere!

jamfaced by jradfakingkarr August 5, 2010

jankface

john yoo: the korean man from bensalem who smokes 5 packs a day... he barely knows english but i love him just the same.

jankface is my bff. he is so more better than me!

jankface by majjyboo April 17, 2005

Jawfaceing 

(verb) When someone is talking a lot and is getting on your nerves.

Your friend is continues to bug you about a lot of nothing
You respond "Yo man, quit your jawfaceing"

Jawfaceing by HaDawg August 22, 2009