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3.
The phrase "Unresolved Sexual Tension" is also abbreviated as UST
The UST between Ryan and Seth in The O.C. is palpable at times.
by Chetamorton July 05, 2005
 
1.
Acronym for UnResolved Sexual Tension.

Originated in the Australian TV series the secret life of us.
"Wow, check out the urst flying back and forth between those two!"

"Me and my maths teacher, we have some urst.."
by Jessica March 10, 2005
 
2.
Unresolved Sexual Tension.

wow. you have URST with her.
by unoanime, December 24, 2006
 
4.
To be overly enthusiastic about something. Synonym of thirst
"Damn son you mad urst! Be easy, the pizza's gonna come soon! Damn!"
by Jason Vernon March 18, 2004