Nick Cannon and Christina Milian's Uncomfortable Kiss  9/27/05

Comedian Nick Cannon had an uncomfortable experience filming his kissing scene with girlfriend Christina Milian in their movie Love Don't Cost a Thing - because his grandparents were watching.

Cannon was initially thrilled to have his grandparents on the set of his movie, until he realized the day's schedule meant they'd be scrutinizing a raunchy moment.

He says, "I was kissing (Christina), but my grandmother thought it was a movie and it was acting, so she was like, 'Why are you really kissing on her?

You're supposed to be acting! I see tongue! Uh-uh! Cut! That's tongue! He can't be putting his tongue in her mouth!'

"But my grandfather he's player. He was like, 'Go on boy, do what you know. I taught him well, I taught that boy something!'"