Uma Thurman: Kiss Auction Winner Ate Her Face ... and It Was 'Not Consensual'

Uma Thurman helped haul in $196,000 during an amfAR auction in Cannes, which is great -- but she's pissed about the extra-aggressive kiss the auction winner put on her.

Uma was hosting the auction when Italian entrepreneur Lapo Elkann bucked up the HUGE amount of cash for a Victoria's Secret Fashion show package -- and then celebrated by practically devouring Uma's face.

Seriously, he basically French kissed her entire head -- while gripping his ciggie -- and Uma felt violated, according to her camp.

Her rep called it "opportunism at its worst. She wasn't complicit in it."