1 definition by asdfghkrd
When, upon lifting immense weight on bench press, one becomes incredibility turned on by their accomplishment. A "Rack-n-Jack" participant will then rack their weight and immediately begin masturbating in the gym.
Damn, I was pissed I couldn't get more reps last week at my new max. I was so impressed with myself that I rack & jacked it right there before I could finish my set.
by asdfghkrd September 28, 2014