ETBF Share definition Flag Abbreviation for East Titty Butt Fuck: Meaning unknown location to far out. away from everything close. Similar to BFE I ended up goin to ETBF/East Titty Butt Fuck to get a damn bottle of wine! ETBF by WraithBlade993 March 5, 2013 0 0 Get merch Get the ETBF mug. Buy Now — $32.95 See more merch