1. Makes no complete sense; is useless. 2. Using something to accomplish nothing. Example: After getting free passes to Carowinds Theme Park, Chum decided it was peanut-butter-jelly time.
PEANUT-BUTTER-JELLY
Meaning of PEANUT-BUTTER-JELLY in English
Slang English vocab. Английский сленговый словарь. 2012