boofay Share definition Flag Slang for Chinese buffet. Used by people in the yardley/morrisville/Levittown area of bucks county,Pennsylvania John:Haley ate like a fat fuckin slob at the boofay yesterday boofay by Swagstastic February 18, 2014 0 0 Get merch Get the boofay mug. Buy Now — $32.95 See more merch