The 37-year-old and Sunnie, seven, appeared on Big Star's Little Star, where she revealed he pulls sickies from EastEnders to 'lay around the house all day'.
During the show, which involves celebrities and their children being interviewed about each other, Sunnie was asked: "What's your daddy's biggest secret?"
The young girl didn't hold back. She replied: "Dad calls into work saying he can't come in because he's helping mummy. But he just lays around on the sofa all day."
Danny, who plays 'Enders favourite Mick Carter, joked that executive producer Dominic Treadwell-Collins might not be too impressed with Sunnie's confession.
He said: "I'm in trouble now. I hope he's not watching. I knew I should never have done this show."
But Sunnie wasn't done with embarrassing her daddy. When asked about his on-screen kisses with Kellie Bright, who plays Mick's partner Linda, she said: "Mummy doesn't like him doing it and it's really disturbing because he's got bad breath."
Well at least we know Danny didn't tell Sunnie what to say before they went on the show!
We don't think Danny's got too much to worry about, though. An EastEnders spokeswoman told the Mirror: "Danny is always a consummate professional on and off set and we've never had any issues with his attendance."
Danny and Sunnie's episode of Big Star's Little Star will air on 18 March on ITV.