BDFP Share definition Flag An acronym meaning Balls Deep First Push. It's basically when you shove your whole hog into a girl on the first thrust. Girl: "Let's go slow ok?Dude: "No way! BDFP bitch!" BDFP by Spankymonkey100 June 1, 2009 0 0 Get merch Get the BDFP mug. Buy Now — $32.95 See more merch