Charlize Theron kissed a girl — and it cost the kiss-ee $140,000. The screen siren gave a 20-second snog to a mystery woman onstage at the OneXOne celebrity auction Thursday night in San Francisco. Theron was annoyed that Jeremy Piven‘s prize of a walk-on part in “Entourage” had commanded much higher bids than her trip to her homeland of South Africa for the World Cup. An event spokeswoman said Theron goosed the bidding by an nouncing “she would kiss a man for seven seconds, or a woman for 20.” The high bid der got her money’s worth — “It seemed like they kissed for a while,” our source said.