Pete Davidson keeps the Ariana Grande jokes going in comedy set

Pete Davidson called ex-fiancée Ariana Grande a “sick genius” for telling the world he’s well-endowed.

In June, amid their whirlwind romance, Grande said on Twitter that the “Saturday Night Live” star is “like 10 inches” — quickly making the size of his member a major part of the public discourse.

“Why would she tell everyone that I have a huge penis?” Davidson joked onstage at Carolines on Tuesday. “So that every girl who sees my d - - k for the rest of my life is disappointed.”

We hear Davidson also said that he’d never been told the same thing by other partners, alluding to his past relationship with Cazzie David, Larry David’s daughter.

“A good amount of Pete’s set is about Ariana,” an audience member told us, adding that Davidson also talked about hearing “Thank U, Next” — Grande’s song about her love life, which she released shortly after their breakup — for the first time “while he was backstage at ‘SNL’ in a clown outfit.”

The comic also told several stories about living with his mother, whom he moved in with after leaving Grande’s grand place, including how he goes to parties with his mom. “Because that’s my life now — she’s like, ‘Maybe you’ll meet someone?’ ” he cracked.

Reports last year said that Davidson and Grande were moving into a $16 million apartment together in Chelsea after their surprise engagement. The 4,000-square-foot unit with five bedrooms is in a building designed by Zaha Hadid, next to the High Line.

Cellphones were locked up during Davidson’s performance — something the club occasionally does at a comic’s request.

Earlier in the show, a fire alarm went off, with Davidson later joking to the crowd, “You all sat here like the Titanic.”

Comic Ricky Velez was onstage when it happened, asking for a manager to come out and tell everyone what to do, joking, “I don’t want to be in the New York Post tomorrow.”