The gallon of cheap iced tea, usually Turkey Hill that black people and construction workers cart around with them due to its good taste at a cheap price, which lasts all day. Another variance is the ghetto half gallon, which some also carry with them.

Besides iced tea, some also carry Kool Aid, lemonade, and other cheap sugary drinks.
There's Tyrone with that ghetto gallon again, like every other day.

The construction worker had a ghetto gallon and was drinking it on the hot day.
by SOODO October 1, 2012
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Bringing a large amount of any beverage to school or work and drinking it all before lunch. You can also go head to head to see who can drink it all first.
Trey: What are sabby and jenn doing?
Jenn: Just the ghetto gallon challenge fool.
by JennJennx3 March 9, 2009
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