K'nexpert Share definition Flag A person who is really good at building with K'nex. (Rip-Off-Legos) Wow, Bjorn is a real K'nexpert! He made a whole city in a half an hour! K'nexpert by toystoystoyswelovethemweloveth December 31, 2009 0 0 Get merch Get the K'nexpert mug. Buy Now — $32.95 See more merch
