George Clooney's biz partner insists the actor was NOT pounding shots before his nuclear blowout with casino mogul Steve Wynn -- and tells TMZ, "We weren't drunk."
As we reported, Clooney and Wynn (left) locked horns earlier this month at a fancy dinner in Vegas after Wynn called Obama an a-hole. Clooney shot back, calling Wynn the a-hole ... then stormed out.
Wynn claims things exploded because Clooney was slamming tequila -- but Rande Gerber, who was at the dinner -- insists, "No shots were had" ... and it was NOT a heated political debate.
Gerber says, "This wasn't about politics. It was about George standing up for a friend."
FYI, Clooney and Gerber (Cindy Crawford's husband) are partners in a tequila company called Casamigos. They were meeting with Wynn to discuss future business at Wynn's hotels, which already serves the brand.
Funny, we're told Wynn's hotels continue to stock Casamigos ... despite the blowout.