Shaquille O'Neal got an ENTIRE nightclub to chant "Barkley Sucks" during a DJ gig in D.C. -- and the trolling didn't stop there!
Shaq was performing at Echostage as DJ Diesel -- when he decided to clown his "Inside the NBA" co-host with a giant projection on the back wall that read, "Barkleey Has NO Rings!"
Shaq clapped along gleefully as the place went crazy!
Of course, Shaq and Chuck are really tight in real life -- so, it's all in good fun.
Now, it's on Barkley to get even .