The athletic cup and supporter encasing a male athlete's genitals.
Somebody bought McGuire's jock box on EBay.
by balljo February 10, 2005
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A one time highschool douchebag jock who now moves boxes in a warehouse for a living.
James: Hey, I stopped into Great Buy for their free-phone friday and I ran into Jeff. Guess what he's up to now?

Tom: What?

James: He's a box jock in the warehouse. Guess he should have paid attention in calc.

Tom: That sucks. Pass the joint, dude.
by TribbleDibbleBibble(sc3n3) October 2, 2010
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The penis of an athletic and/or sports obsessed male placed in the vagina of any female (often preps).

The act of putting the penis of an athletic and/or sports obsessed male into the female vagina.
Chad said he's gonna hook up with Amber tonight. Oh yeah, jock in the box.

Did you see Kyle and Mandy last night? He totally jocked her box.
by Jersey Avery April 20, 2008
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