This is the mashup weapon forged by the folks of Mat At Arms that combined all four ninja turtle weapons: Donatello's bō, Leonardo's ninjato, Raphael's sai, and Michelangelo's nunchaku. The result...is whatever the hell this thing is. A bōjatosaichaku? I dunno, but I can almost say for certain I would brain myself with that sai on a chain dangling from the end while in combat.
Leonardo: Oh shit, here comes the Foot Clan, GW -- cover the rear! GW?!
GW: Help meeeeeeee.
Leonardo: Jesus, your brains are leaking everywhere!
GW: Leonardo -- you know what to do.
Leonardo: Kill Krang so we can jam your brains in his android body?!
GW: Please, there isn't much time. Oh -- and tell Michelangelo to bring some pizza and weed.
Keep going for a video of the build.
Thanks to GSP, who is like GPS, but already lost.