Sharon Osbourne turned the air blue on Sunday night.
The X Factor UK judge was overwhelmed with excitement when her act Sam Bailey won the TV competition, falling to her knees crying when the news was announced.
UK newspaper the Mirror reports while filming a follow-up interview for The Xtra Factor, Sharon "dropped the F-bomb".
Xtra Factor host Caroline Flack had turned to Sharon and Sam, asking, "Are you guys going to be friends forever?" to which the star replied: "We are down with Jay Z, don't f**k with us!"
Sharon issued an apology for being vulgar, but continued on her tirade. She soon made viewers blush again by making mention of her nether regions.
"It just comes out of my vagina!" she mused.
Sam's win was particularly stunning for Sharon, who had left the show in 2007 after failing to win several seasons in a row.
She also took to Twitter to share her excitement.
"I am so blessed to have been a tiny part of @SamBaileyREAL's victory tonight on @TheXFactor. Thank you. #XFactorFinal," she wrote, adding, "Thank you everyone who has backed @SamBaileyREAL on @TheXFactor! She couldn't have done it without all of you behind her! #XFactorFinal."
Sharon also admitted she was overwhelmed by guest performers Sir Elton John and Gary Barlow, calling their performances mesmerising.
"So emotional for me to see @eltonjohndotcom & @GaryBarlow, two artists that I love dearly performing together on @TheXFactor. It was magical," she wrote.
