Britney Spears reportedly snuck out of her home in disguise for a secret sex session.
The 'Womanizer' singer apparently defied her father Jamie's ban on men to enjoy the saucy rendezvous with a mystery friend - and even bragged of her romp when she got home.
A source said: "She's been a prisoner in her own home and began to crave affection and attention from someone other than her parents, which is only natural.
"She told her dad she got a ride with the person she'd arranged to meet and gone to their house in Los Angeles for a few hours.
The source added to Britain's Now magazine: Britney told him that she was a grown woman and ordered him to get out of her room
"She told him not to worry and that it was someone she'd known a long time who was a good person and wouldn't hurt her."
However, Jamie - who is co-conservator of her estate following her public meltdown last year - was apparently furious over the incident.
The source added to Britain's Now magazine: "Britney told him that she was a grown woman and ordered him to get out of her room. She didn't come out for the rest of the day."