Billerica Flu Share definition Flag A term used to describe the pain killer epidemic in Billerica. Damn, he is a good rapper, I just hope he doesn't get the Billerica Flu Billerica Flu by 4TwenT December 1, 2011 0 0 Get merch Get the Billerica Flu mug. Buy Now — $32.95 See more merch
