Lemonade made at a restaurant by combining (free) water, (free) lemon, and (free) Equal. Generally performed at a Red Lobster.
"I'll have water with extra lemon...oh, and please bring some Equal...and I'll have the 'All you can eat shrimps, please'". Then you turn toyour friends and say, "Anyone else want some ghettolade?".
A word adapted to Cheltenham mall in Philadelphia, PA. The stores and movie theatre there are so dirty and ghettoyou'd have to be really desperate to shop there.