be in on

Idioms  

1. see in on.

2. Also, get in on. Be or become a participant; be or become one of a group who have information. For example, Is she in on our secret? or I'd like to get in on this venture. [c. 1920] Also see barge in on; ground floor (get in on the); in good with.

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Example Sentences

Members of the public have been urged to "make every effort to be in" on Sunday as around 100 engineers make their way around homes.

From BBC

For as out of touch with the common person as she can arguably be, Paltrow always seems to be in on the joke.

From Salon

Even bridal wear can be in on the act, with pregnancies “showcased even as women walk down the aisle.”

From Slate

It was all about youth, attention, and a willingness to be in on the joke, even when we were the punch line.”

From Slate

“She’d be in on anything if she thought it was a game to be won in anything it was about, whether it was H.O.R.S.E, whether it was an actual game, whether it was cards — she wanted to win,” Walker recalled.

From Los Angeles Times