The term "Hot racking", is lingo in the Military for laying or sleeping on his/hers rack. Hot meaning bad, racking meaning your rack or bed.
Hey look, John's in his rack already and we just got off work two mintues ago. It smells over there, he must be "Hot racking."
by TRISOM DOT ORG March 01, 2011
Commonly used in the military, the practice of assigning more than one person to a rack/sleeping space, with each person occupying the rack in shifts. This system requires less berthing space on ships and submarines, for example.
"Man, I hate hot racking with Myers, he sweats too much."
by Giantblueox June 30, 2015