Sunken Knuckle Share definition Flag To put your finger inside a girls vagina past the knuckle, the act of fingering a girl ah you know tanya from the club? i gave her a sunken knuckle Sunken Knuckle by callowjohnny May 8, 2010 0 0 Get merch Get the Sunken Knuckle mug. Buy Now — $32.95 See more merch
