Cameron Diaz is really embarrassed by her sex tape.
In Sex Tape (in theaters on Friday, July 18), Diaz and Jason Segel play a couple who accidentally uploads a homemade NSFW video of their three-hour sex marathon to their friends and family members' iPads.
And only we have an exclusive clip from the hilarious movie showing what happens when Diaz and Segal's best friends (Ellie Kemper and Rob Corddry) get a look at the footage.
Diaz and Segel actually catch the two getting hot and steamy in a car.
"Yes, we watched the video," Corddry says, adding that they only "skimmed it because we didn't have time."
Diaz is left red-faced. "This might be—no, it definitely is the most embarrassing moment of my life," she says.
And that's when things really get awkward. "You should not feel embarrassed," Kemper says. "If anything, you should feel proud."
Corddry adds, "Yeah, your body's insane!"
Things seem to be going much more smoothly in Diaz's real private life. She was in Florida over the Fourth of July weekend introducing her family to her new boyfriend, rocker Benji Madden.
(We'll have more Sex Tape for you later this week. We'll be at the movie's L.A. premiere on Thursday night so make sure to come back to E! Online for all the scoop.)