Colin Jost Jokes About His Mom's Reaction to Baby Son Cosmo's Name: 'Is It Final?'

TheSaturday Night Livestar, 39, appeared onLate Night with Seth MeyersThursday, joking about life with his sonCosmo, whose birth he announced last month. When asked about the inspiration for the name he and wifeScarlett Johanssonchose, Jost said his mom threw out alternative options and variations on the name Cosmo at first.

“She would call us, after three or four days, she’d be like, ‘Cosmo…’ And she’d be like, ‘And, now, is itfinal? Like, did you submit the birth certificate?’ And we’re like, ‘Oh, yeah, we did that at the hospital,'” said Jost. “She was like ‘Oh okay, interesting. Because I was reading that there’s also a name Cosimo with an “I” so that could also be an option. Maybe you call him Cosimo, that’s his real name, but then you can call him still Cosmo.'”

After meeting more Cosmos in everyday life on Staten Island, his mom eventually warmed up to the name. “So then,” he said, “she would call, and she would say, ‘I met someone — they said their uncle’s name is Cosmo, so itisokay.’ And I was like, ‘It’s locked in.'”

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source: people.com