big debbie Share definition Flag 1.a person that constanly eats little debbie cakes. 2.a fat emo raver with a knack for glow sticks. that person is so fat she is such a big debbie!!! big debbie by Pam (andrew) July 5, 2007 0 0 Get merch Get the big debbie mug. Buy Now — $32.95 See more merch