1 definition by Andrew P. Ennis
A derogatory phrase used when a person does something idiotic, incompetent, unintelligent, foolish and or mindless. It implies that the person is mentally disabled or retarded and therefore this is the food they should eat.
Person 1: Bro why did Randall over there just stuff his head in that pile of feces?!
Person 2: I don't know bro but he needs some green jello.
Person 2: I don't know bro but he needs some green jello.
by Andrew P. Ennis April 5, 2019