Danny Dyer lost his virginity aged 14.
The 41-year-old actor shocked his youngest daughter, 11-year-old Sunnie, with the revelation that he used to get jiggy with it with her mother, his wife Joanne Mas, 42, during his early teens.
Speaking on new Channel 4 series "Let's Talk About Sex" - which airs next month - he says: "I was having sex before I started puberty. With your mum."
A shocked Sunnie replies: "Fourteen? You had sex at 14? That's like me having sex at 14."
Danny warns: "Well, that won't be happening."
The "EastEnders" actor is no stranger to opening up about his bits.
In January, the "Football Factory" star claimed he has a "Godzilla"-sized manhood.
Danny made the boast on his BBC Once show "Right Royal Family", admitting if he was around in medieval times he would've worn a small codpiece - a flap attached to the front of the crotch of men's trousers to accentuate the genital area - because he wouldn't need to "over-compensate" for anything.
He said: "In modern times, the flashier the car - the Ferrari - it means that you're over-compensating for something.
"So I would have gone for a smaller codpiece just to let everyone in the room know I don't need a big codpiece.
"Because what's underneath is Godzilla."
Danny had to pose a series of embarrassing questions to his other daughter, Dani Dyer, and her boyfriend Jack Fincham during a recent episode of "Celebrity Juice".
He asked Dani how long it takes Jack to perform in the bedroom "to the nearest minute, on average?"
She replied: "Oh god, I don't know," and Jack said: "I can't even make a joke, I can't even make a joke. If I make a joke, he's there."
Danny then said: "You're only cuddling ain't ya?"
Dani nodded in agreement and then gave an answer of "15 minutes", but an honest Jack said it was more like "10 minutes or so".