Nate Diaz: Locked, Loaded and Super Cocky!!!

Nate Diaz seems about as confident as any UFC fighter ... mocking Conor McGregor's water bottle attack.

We got Nate at the MGM Grand in Vegas Friday, where he'll be taking on Conor for a second time.

Nate vows to make a pilgrimage to Conor's homeland after the fight.

And UFC's Joe Rogan weighed in on the water bottle incident, pooh poohing the whole thing.