JANE Fonda has finally met face to face with the rapper who performs the song “Do the Jane Fonda” — and got down to his track at her Christmas party. California-based Mickey Avalon — who sings “More junk in her trunk than a Honda/I know you wanna do the Jane Fonda” — performs with dancers clad in skimpy workout gear similar to the leotard Fonda wore in her fitness videos. He was introduced to Fonda by Sean Penn. She tweeted on Wednesday: “Sean Penn brought Mickey Avalon to our xmas party. He sang ‘Do the Jane Fonda’ and I danced. Fun!!!” Avalon recently told Chris Yandek of CYInterview.com: “She [Jane] actually did hear it, and I guess she liked the song — so that’s cool . . . She pretty much took it at face value for what it was. There really wasn’t too much to read into it, and she didn’t. I’ve had people ask me: ‘Are those sexual positions?’ Which I say is closer to the truth.”