Ben Affleck once called a meeting after discovering his daughters used the word "junk" for a penis.

Ben and his wife Jennifer Garner raise three children together; daughters Violet, six, and Seraphina, three, and six-month old son Samuel. Jennifer says the girls love having a little brother around and have come up with novel ways to name his private parts.

The Hollywood actress admits her use of slang might have backfired when Ben recently told the girls they had to "clean up their junk" before going to bed.

"[The girls] are very into him. Well every time you change the diaper for the first few weeks, you're like, 'Oh right, you're a boy! There's something else going on there, I wasn't expecting that,'" she joked in an interview on Jimmy Kimmel Live. "[Do they notice?] Yes, in a very sweetly-curious three-year-old way.

"Sera was like, 'That's what mom says!' And he [Ben] was like, 'What do you mean?' And she said, 'You're the one with the junk dad - your penis!' He was like, 'Can I see you in the kitchen?' He was like, 'Are you teaching our children to say junk?' And I said, 'How many times a day can you say penis?"

Jennifer has a close relationship with her children. She recently revealed her daughters are motivating her to shape up after the birth of Samuel.

"My kids have a lot to say about the appearance of how I look naked," she quipped.