Colin Jost reveals unique name he and Scarlett Johansson gave their newborn baby boy

Scarlett Johansson and Colin Jost welcomed their first child together, a baby boy, and the new dad has revealed the baby’s name.

The “Saturday Night Live” star took to Instagram on Wednesday to write: “Ok Ok we had a baby. His name is Cosmo. We love him very much.”

Jost added that privacy would be “greatly appreciated” during this time, and jokingly directed all further inquiries to his “SNL” co-star, Michael Che.

Che seemed to take the joke in stride, updating his Instagram bio Wednesday night to read “cosmo’s publicist” and sharing fan inquiries about the baby on his Instagram Stories.

This is Scarlett Johansson’s second child. She has a six-year-old daughter, Rose, with ex-husband Romain Dauriac.