The actress is yet to comment on reports she's expecting a little brother or sister for Rose, her daughter with second husband Romain Dauriac, but she can barely take a second to use the toilet with just one needy kid.
"She shadows me all the time, which is wonderful...," the star laughs on U.S. daytime talk show "The Kelly Clarkson Show", ahead of this week's (ends July 9) release of her Marvel blockbuster "Black Widow", which was delayed due to the COVID crisis.
"I'm sure in a few years she's not going to want anything to do with me and so I should soak it all up but there's definitely times where she's on the other side of the bathroom door and I'm like, 'Rose, you've got to give me a minute, you've got to give me a minute. Mummy needs her time.' "
"But she means well and I'd rather have it that way than her winding up wanting nothing to do with me," she adds.
During the interview, Johansson also spilled why she shied away from watching "Saturday Night Live". She told host Kelly Clarkson, "I now rarely watch the show without having a sense of…not overwhelming panic, just like a slight underwhelming panic because I just feel like at any moment something's going to fall apart."
"And that's the excitement of 'SNL' and for all audiences, right? Because it's absolutely live," the 36-year-old added. "But when you're emotionally invested in it and not just entertained by it, it takes on a little bit of a different life."