Jessica Biel - Biel Surprised By Timberlake's Raunchy Comedy Routine

JESSICA BIEL was stunned when boyfriend JUSTIN TIMBERLAKE performed an sketch mocking his relationship with BRITNEY SPEARS live on U.S. TV - because she knew nothing about the skit before it aired.

Timberlake made his third appearance on comedy sketch show Saturday Night Live at the weekend (09May09).

In one sketch the pop star dressed as his immigrant ancestor and predicted the future for his great-great grandson (Timberlake), making reference to his teenage romance with Spears.

He said: "He (Timberlake) will date a popular female singer (Spears). Publicly they'll claim to be virgins, but privately - he hit it."

And although Biel admits she was caught by surprise by the swipe at Timberlake's ex, she insists the sketch sent her into fits of laughter.

She tells the New York Daily News, "I thought that was really funny. I had heard a couple of things (about the show), but I didn't really know what it was actually going to be. It was all pretty much a surprise."