Bj knees Share definition Flag Permanent scarring of the knees due to given blow jobs for a prolonged period of time. You know that girl definitely has bj knees! She has been known for a long time around here as the queen of blow jobs. Bj knees by lalaloveless June 26, 2016 0 0 Get merch Get the Bj knees mug. Buy Now — $32.95 See more merch