1. A person that speaks without moving their bottom jaw to express themselves for fear that the corn cob will fall out of their ass.

2. (noun) an incredibly annoying, privileged and clueless person. Usually white, but there are many exceptions.

3. a cracker
"I'm sick of Diddy changing his name every fuckin' year and throwin' his damned all white parties. He's so lock jaw.

White: See Thurston Howell III of Gilligan's Island.

Non-white: See Hilary and Carlton Banks on the Fresh Prince Of Bel-Air.
by slappinpappi November 7, 2006
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another way of saying brains, head
"Tell that bitch to give you LOCK JAW"

"Imma tell a bitch to give me that yo LOL"
by LILR23 February 14, 2008
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Usually applied to a woman, her mouth and jaw become so fixed in the position of giving head or getting mouth stuffed that it is painful for her to shut it.
''Hey man, I railed her mouth so much that she ended up with a nasty case of the hungarian lock-jaw.''

or applied to a man

'' Eventhough she came I didn't want to stop going down on, I think I got hungarian lock-jawed.''
by The El Paso Bonerattler April 20, 2010
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When you worry excessively about something that, while clearly a threat, has a very tiny possibility of happening. You overthink the problem so much that you start worrying about worrying about the problem!
Man you've got Katie's Lock-Jaw syndrome, you just have to chill out and cross the bridge when you get to them.
by MM007 August 19, 2017
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When your mouth gets stuck open after having sex.
Sippin' till my heart stop and my jaw lock
I just made her jaw drop from a backshot
by juicewrllld999 December 1, 2020
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when ur mouth or jaws get stuck open after giving head
or very hardcore sex.
Basically its the same as a rim jaw.

she was in the hospital due to a terrible accident w/ her japper jaws -ha ha- she had a jaw lock for 2 hrs str8!
"U'R such a Japper Jaws" --ha ha
by miss G'(ya'll kno') July 16, 2006
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sucking dick so long till your jaws lock
“i’ll suck him up till my jaws lock
by tnxtdoor April 23, 2023
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