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1.
273
Acronym for "I'm missing you". Often said discreetly, just like 143.
Hey, 273.
by WENUSMAHMAN November 20, 2010
 
2.
STP for Absolute Zero on the Kelvin scale, (also known as 0 degrees celsius).

Used to describe something freezing, which is a hyperbolic synonym to the adjective "cool".
"Ayyo! Dat picture of us be hella -273 doe."

"On da real? Oh snap, hella bromo-in it up! Hella negative doe! HELLA!"

"Finna be freezin wit dat -273 kicks doe."
by negativeswagnig November 07, 2011