Chicago Bears WR Javon Wims uncorked TWO massive haymakers on a Saints player mid-game ... and the whole violent affair appeared to start because of a mouthpiece jacking.
Here's the deal ... early in the 3rd quarter of the Saints-Bears game in Chicago, Wims went to block Chauncey Gardner-Johnson -- and the two got into a bit of a tussle.
The guys trash talked each other ... and, eventually, Gardner-Johnson ripped Wims' mouthpiece right off his facemask.
Wims was taken out for the remainder of the Bears' drive after the play .