Scarlett Johansson is giving a rare insight into her family life.

The actress welcomed her son Cosmo with her husband Colin Jost.

Johansson revealed how she came up with her son’s unique name.

She joked that they “just threw a bunch of letters together.”

She praised her son’s moniker as “refreshing,” and her friends liked it.

The “Avengers” star also revealed the connection between her son and daughter’s names.

They both have a flower idea behind their monikers.

However, Cosmo’s unique name didn’t sit well with one person.

Johansson’s mother-in-law kept on suggesting several versions of the name.