3 ... 2 ... 1 ....

That's how long it took for Meyers Leonard to chug a full can of Coors Light in his Orlando hotel room this weekend ... AND, GUYS, THE NBA BUBBLE IS LIT!!

Check out video of the Miami Heat's 7-footer taking down the suds like it was a shot of water ... we clocked him at an otherworldly 3 seconds!!

"King of the Bubble," 28-year-old Leonard said of his unreal drinking ability. "Accepting all challengers."