It was like a scene out of “Traffic” when tough guy Benicio Del Toro charged into a brawling crowd at LA’s swanky Buffalo Club — and broke it up FAST! At a table withMatthew McConaughey and other amigos, Benicio was making Latin-lover moves on a stray senorita when trouble exploded at the bar! A Benicio buddy accused a guy — who claimed to be an assistant DA — of pawing his girlfriend . . . then CLOCKED him! All hell broke loose, but Benicio waded in, shoved everyone back — and dragged his pal outside to chill as the DA (typical lawyer!) whined, “I’m pressing CHARGES!” As for ever-cool McConaughey . . . he stayed put the whole time and pitched woo at Benicio’s chica!