Hot racking 

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."

Hot racking by Giantblueox June 30, 2015

Hot racking 

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."

Hot racking by TRISOM DOT ORG March 16, 2011