After a concert in San Francisco, U2’s Bono gave winsome Winona Ryder and — surprise, surprise! — a bubbly Chelsea Clinton (accompanied by Secret Service dudes) a champagne flight back to LA aboard his private jet. As Bono chatted with Chelsea and Winona, things REALLY started rockin’ when turbulence violently shook the plane! Seeing the fear on their faces, Bono suddenly shouted “I’M GAY . . . I’M GAY!” — reprising that memorable scene in the flick “Almost Famous,” in which rockers fearing their plane’s about to crash start blurting out shocking personal secrets! The girls got the joke and cracked up, but the Secret Service guys . . . ? They apparently missed the movie!