Non-elected, unofficial leader of a community housing tank in jail. Duties include control of TV, dispute arbitration, breaking up or organizing of fights and anything else related to the tank. Payment is often in the form of commissary.
I don't know why Big Boy tried to change the channel from Springer to watch the news without asking. Doesn't he know he ain't Tank Boss? That's gonna cost him 2 soups...
by MrBobby February 28, 2010
The Urban Dictionary Mug
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