slackjaw

One whos mouth is open all the time.

Look at her mouth, she has really bad slackjaw.

slackjaw by Soloman Johnson November 20, 2006

slackjaw

North American term for an extemely ignorant, possible inbred person. Usually of rural heritage.

see also: hick, mouthbreather, yokel

"Some folks will never eat a skunk, but then again some folks'll - like Cletus the slackjawed yokel."

--The Simpsons

slackjaw by fortuga November 12, 2004

slackjaw

An individual with loss for words, staring blankly with mouth open. Often clueless and/or confused.

Also used as two words: "slack jaw", "slack-jaw"

"When asked to calculate the tax, she stood there slackjawed."

"The slack-jawed prophet said nothing when asked about the future of man, thus answering the question with clarity"

"The Slack Jaw Prophets rocked the house"

slackjaw by MonteryJack August 7, 2007

slackjaw

A game in which two people try to keep their mouths slack for as long as possible. The person who smiles or closes their mouth first loses. Like a staring contest, only with a slack jaw. Best if done in really boring classes, across the room from each other.

Jane and I had the best game of slackjaw today! It went on for fifteen minutes, but then the teacher called on me and I had to stop.

slackjaw by brownbanana October 10, 2005

Slackjaw

Slackjaw is a game in which two parties agree to lower their jaw in a battle of wills. The first participant to smile or otherwise move their jaw forfeits the game.

Bro, I can't beat you at slackjaw when you execute the perfect head turn and wink combo.

Slackjaw by Westinator2000 October 13, 2011

slackjaw

One who eats so much cock his jaw has become slack!

You slackjawed cockeater

slackjaw by Irax September 19, 2003

Slackjaw McMaggotsac 

The alter ego to a certain Jack Street. One of many names Jack Street goes by. Others are; Slack Lip, Slack jaw, Mcmaggotsac, Jake Lane, Jason Mra, Chip Fuyoung, It's Meeeeeee Weeeeesker, and Bitch.

Any of the following names can be used to describe someones
A) Jack Assery
B) Tom Foolery
C) Jack Streetery

" He's one hell of a Slackjaw McMaggotsac if i've ever seen one....and I have, so i totally know what i'm talking about. Also, So You know who I am talking about, i'm Talking about Jack Street."

Slackjaw McMaggotsac by EatonTVS07 November 25, 2009