What is Battle Jack?
1.
Is when someone masturbating or jack-off in a warzone when theres nothing much to do beside gun-fights.
Soldier 1: "hey dude, have you ever thought about a battle jack?"
Soldier 2: "Are you mad???"
Soldier 1: "Beside, you might be the first kid on the block you know?"
See
Random Words:
1.
A day that youself,or your friends take off from work/school(which day off from school is more likely)and devote that day to jacking off..