grocery money 

a derogratory nickname given to one who pretends to be earning a considerable income, but in reality is only able to contribute "grocery money" to their parents in whom they live with. Likes to give the impression that they have a wonderful, well paying career when they really have a part time position and no financial responsibilities.

"That punk ass ain't bringin' in the bacon, he's just grocery money!"

grocery money by ChodieCheese September 29, 2009