Ll Cool J - O'donnell Shocks Kids With Co-Star's Rap Lyrics

Rapper/actor LL COOL J warned co-star CHRIS O'DONNELL off playing his hits collection to his kids - because the album was packed with expletives.

O'Donnell decided to get his kids ready for a visit from his sidekick on U.S. TV drama NCIS: Los Angeles by playing them his music - but he picked the wrong album.

The Batman & Robin star explains, "I downloaded all his greatest hits and I was playing them for the kids... and I was telling LL, 'I've been playing all your songs for my kids,' (and he said), 'Which ones are you playing... You better check that out.'

"And (so) I looked and I got all the explicit versions... I wasn't really paying attention. So I had to erase them all and get all the clean versions."