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1.
Dressed out in sports gear, especially refers to wearing a jockstrap/athletic supporter.
A sports coach or P.E. instructor might tell the guys on his team or in his class, "You guys stop screwing around and get jocked up!"
by SportGuy September 27, 2006
15 4
 
2.
To get ready to battle or go to war.
Put on your gear and game face.
The warrior was jocked up and ready to go do some killing.
by Jerry Nelson September 27, 2010
6 1