'Girls' Actress Jemima Kirke Gets a Little Too Excited by Jay Z

Jemima Kirke, the 28-year-old British actress who's known for her role of "Jessa" on hit series "Girls," apparently got a little hot and bothered at a recent NYC video shoot promoting Jay Z's upcoming album. Kirke, who was in the crowd watching the fun, got so moved by Hova's raps that she made a real spectacle of herself, culminating with jumping on the rapper's back and refusing to let go. Security, please!

Here's a step by step account of the entire event

He (unwisely?) chose to serenade Kirke—a performance artist herself in addition to her acting career, who clearly has strong feelings about the medium. As you can see here, is already starting to look a little overly excited. Gotta take the hair dow

Kirke then starts swirling her mane around while giving Hova her best man-eater look. Easy, lady. We know you've got a degree in fine arts and are passionate about performance, but this is taking things a little too far.

Apparently, Jay Z isn't put off by Kirke's rapid onset of cray—he keeps rapping away. Meanwhile, Kirke appears to be plotting her next move…

Aaaand, there she goes! Kirke jumps right on Hova's back "like a little monkey," a witness told the New York Daily News. "She was acting totally nuts." Allegedly, Kirke refused to get off the rapper's back, and security was required to right the situation. Jay Z, ever the professional, kept rapping throughout without missing a beat. Hey, this almost tops his wife Beyonce's recent show of professionalism, when she caught her hair in a stage fan but managed to finish the song she was performing—which begs the question: Would you rather have a fan in your hair or a fan on your back?