Jennifer Lopez’s Flying ‘F’ On Live TV!

Jennifer Lopez is definitely from the block … Maybe the “F” block?

During Wednesday night’s taping of FOX’s American Idol, the singer clearly forgot she was on live television because she accidentally dropped the “F” bomb.

“Jena, you sound phenomenal,” J. Lo said while critiquing contestant, Jenna Irene’s performance of “Bring Me To Life.”

“[Harry Connick, Jr.’s] right, the minute we hear your voice it’s soothing, it’s like, ‘Oh, my god,’ and she’s gonna sing it great. The only thing I would say is I wanted you to be more messy. Do you know what I mean?”

She continued, “You were kind of fixing your hair, and right at the beginning you kind of just threw yourself into the crowd and your hair went crazy. I wish it would have been more messy,” she said as she tossed her own hair.

Judge, Keith Urban jumped in and told the “I Luh Ya Papi” singer to flip her hair again and that’s when the flying “F’s” flew out of the 44-year-old’s mouth. The singer immediately covered her mouth in embarrassment and simply carried on with her comment.

In the clip, the word is bleeped and it happens very quickly but … It happened.

Check it out: