There was nothing private about Cameron Diaz stuffing popcorn into Alex Rodriguez's mouth.

On hand to watch the Super Bowl between the Pittsburgh Steelers and the Green Bay Packers, the A-list couple were caught in a semi-embarassing moment right after the commercial break.

Diaz fed her Yankee beau a little bit of popcorn, before realizing the cameras were trained on them.

But they weren't the only celebrities embarassed. Moments before popcorn-gate, Ashton Kutcher was shown looking bored, NFL legend John Madden was texting and Laura Bush just seemed amused. Watch it!