The musician – real name is Richard Melville Hall – said he dared to “k**b touch” Trump back in 2001, years before he became president, after a chance encounter at a party.
A ‘k**b touch’ is when a bloke takes his penis out of his trousers at a party and quietly brushes it against someone.
Moby, 53, who has sold 20 million albums, told the Sunday Times magazine: “In 2001, I found myself on my way to a party on Park Avenue.
“The party wasn’t that exciting. It was mainly full of businessmen and real-estate developers, most notably Donald Trump, who was standing a few yards away, talking loudly to some other guests.
“‘Moby, go k**b-touch Donald Trump’ said one of my friends.”
He added: “I drank a shot of vodka to brace myself, pulled my flaccid penis out of my trousers and casually walked past Trump, trying to brush the edge of his jacket with my penis,” said the Porcelain singer.
“Luckily he didn’t seem to notice or even twitch. I returned to my friends and ordered another drink.”
Moby’s dad is the great-great-great nephew of Herman Melville, author of Moby-Dick, form whom he got his nickname.
The shocking revelation comes shortly after the musician made another claim involving an A-list celeb and him with his pants down.
In his new memoir, Then It Fell Apart, he wrote about how he found himself in a urinal alongside Gladiator star Russell Crow.
He writes: “He zipped up his pants and then pushed me against the wall of the bathroom and started screaming at me.
‘“Uh, we’ve never met,” I tried to say. “Why are you yelling at me?”’
According to Moby, Russell continued to scream for another minute without explaining himself before “losing interest, cursing a few times, and stumbling out of the bathroom”.