The Arconia came to 30 Rock on Saturday, as Steve Martin crashed Selena Gomez’s “Saturday Night Live” hosting debut.

In a sketch where Selena Gomez played the host of a television program about notable inventions in history, five-time “SNL” host and Gomez’s “Only Murders in the Building” co-star Martin appeared as “gag inventor” Archie Gizmo. He speaks to the camera about starting out his career prototyping a whoopie cushion.

“I knew it would be funny to have your boss sit down and a noise come from his butt. But I just couldn’t figure out what noise. I couldn’t crack it — but then, I met her.”

‘SNL’: Steve Martin Makes Fart Jokes With Selena Gomez

Aidy Bryant appeared in a ’60s flashback, grinning, dancing and farting. “Miss Dina Beans,” Martin said. “I saw her from afar. Her energy was magnetic. Her eyes were endless. And every time she sat down: gas.”

It was that night he realized: the funniest noise that could come from a butt was a fart,” said Gomez. Martin continued to narrate how he fell in love with Dina, as well as her bad luck.

When Bryant opened a can of peanuts and four live snakes popped out, Martin got the idea for prank cans with fake snakes. When she got struck by lightning while shaking someone’s hand, he invented a hand buzzer, and so on.

“The greatest gag she ever goofed was marrying a guy like me. I love you, Dina Beans,” Martin said, extending his hand to shake with his wife — with a buzzer hidden in his palm.

In her monologue, Gomez made jokes about her age difference with her “Only Murders in the Building” co-stars.

“I was so honored to work with Steve Martin and Martin Short, especially after I googled them to find out who they were. I remember telling my friend I was cast in a show called ‘Only Murders,’ and she said, ‘Sounds sexy. Any hot co-stars?’ And I was like, ‘Depends. Do you like the banjo?’”

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Season 1 of “Only Murders in the Building” debuted on Hulu in August 2021 and Season 2 will premiere in June. The series follows Mabel Mora (Gomez), Charles-Haden Savage (Martin) and Oliver Putnam (Short), three New York neighbors who team up to solve the murder of Mabel’s childhood friend and fellow Arconia tenant Tim Kono (Justin Cihi) while documenting their progress on a podcast.