when one tells their friend a secret, and said secret teller wants to keep it between those two. Secret teller tells secret reciever to "lock it up"
"Dude, remember that mary girl?"

"Yeah."

"I nailed her last nite. But hey... lock it up."
by Chris Alfrey December 4, 2006
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When something is moving so slowly, it resembles the traffic congestion of Dallas during rush hour. South/East Texan phrase.
"Computer froze again, damn thing's locked up bigger than Dallas"

Typically run together as "locked up bigger'n Dallas".
by outsnyder November 7, 2011
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The groundswell chant heard around the world relating to the 45th President of the United States.
As I stood in the rotunda, surrounded by an expanding ocean of angry Americans, I felt the words, “Lock him up!” come rolling out of my throat.
by Dr Bunnygirl May 22, 2019
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When you've been caught red handed by someone and it's usually embarrassing.
Paul: Gary got with that whale the other day
Fred: Did you Gary?
Gary: Yeah, guilty as charged, lock me up. *Puts hands in a handcuff like position*
by Harcus Modgkinson November 13, 2013
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To become involved in a violent altercation.
They was walkin down the hallway talkin smack and they locked it up!
by Pinky C 918 August 15, 2007
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A demand habitually chanted by the angry masses calling for the authorities to arrest somebody, usually without suitable evidence of the somebody's guilt.
Bobbert: Butch Hartman is stealing art!
Cyan: LOCK HIM UP!
Trump: LOCK HIM UP!
Ellie: LOCK HIM UP!
by MalumLibrum958 February 25, 2021
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to be sentenced to life in prison without the possibilty of parole
i wanna lock someone up and throwaway the key.
by buba1234 February 4, 2012
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