A spoonful of sugar? Mary Poppins could use a mouthful of soap!

Turns out, Julie Andrews’s silver tongue can get pretty salty. The beloved Oscar- and Grammy-winning actress known for family-friendly classics like Disney’s DIS, +1.23% “Mary Poppins” and “The Sound of Music” curses — and does so quite a lot, apparently.

Andrews, 83, revealed a penchant for flinging obscenities while picking up a lifetime-achievement award at the Venice International Film Festival on Monday night.

She recalled how she once fell “like a ton of bricks” during filming for 1964’s “Mary Poppins” when she was supposed to soar through the air on a flywire. And she said some things that were even more colorful than “supercalifragilisticexpialidocious”:

“ ‘I do swear a lot. Mr. [Walt] Disney found that out quickly. … I think I said a few words he had not heard very often.’ ” — Julie Andrews

In fact, she said even her iconic straight-laced British nanny isn’t nearly as prim as she appears. Just look at her clothes.

“On the outside she is very proper ... but look at the lining of her jackets and her skirts — they are very colorful and wicked,” said Andrews. “She had another secret personality that was a little more playful.”

And — brace yourselves — she told reporters that she thought “The Sound of Music” was “too sentimental and saccharine and over the top” when she saw the musical on Broadway.

“So I decided with the director Robert Wise that we would try to be as astringent as we possibly could. I think it made a big difference,” she said of the 1965 movie version. “It is still a sweet and loving film, but we saved it from being too saccharine.”

Of course, Dame Julie isn’t alone among the ranks of notables who on occasion work blue. PBS children’s show icon Bill Nye the Science Guy has used language that’s anything but family-friendly. (Mind you, some research has linked swearing with intelligence and broader vocabularies.)

Related: How to get ‘filthy f—king rich,’ according to Bill Nye, the Science Guy

And swearing by politicians is on pace to hit an all-time high on social media this year.

Related:This chart shows the obscene amount of swearing lawmakers are doing in public

Having a foul mouth is becoming less taboo at work, with more than half of employees admitting in a 2018 CareerBuilder survey that they curse on the clock.

And if you’re hearing a lot of people dropping F-bombs at the gym, it could be because research has shown that people who curse while working out see better results.