Finger Barrels Share definition Flag Fingering; surfing slang originating from the term 'barrel' (the tube-like part of a wave). "What'd you do with Tara last night?" "Heaps of finger barrels, I was frothing ay." Finger Barrels by Tilllllllllly August 24, 2012 0 0 Get merch Get the Finger Barrels mug. Buy Now — $32.95 See more merch