SINGAPORE — He Wormed his way in.

A stone-sober Dennis Rodman swooped into town for President Trump’s summit with Kim Jong-un on Monday — wearing silver glitter nail polish and a shirt reading, “Peace starts in Singapore,” along with the Web address for the marijuana-industry cryptocurrency PotCoin.

“I’m just happy to be here, I’m glad this happened. For five years of waiting, to see what’s going on. I hope that things can turn out well for everyone in the world, so that’s why I’m here,” Rodman, known as “The Worm” during his NBA days, said at Singapore’s Changi Airport.

Rodman, 57, has a reputation for partying hard on his many trips to North Korea — but was on his best behavior as he flew in, drinking only ginger ale and snoring through most of the journey.

He brought his own documentary crew with him, and filmed a quick segment with a GoPro-wearing videographer before takeoff. He was polite to fans but refused to speak with reporters, waving off questions about his plans for the trip.

The athlete-turned-diplomat-wannabe, who isn’t part of the official summit delegation and flew in on PotCoin’s dime, broke his silence on arrival, but still couldn’t explain what he’d be doing in Singapore.

Rodman said it’s still “up in the air” whether he’ll meet with Kim, whom he’s previously called “a friend for life.”

“He’s got bigger things than me right now, he’s trying to make this conference . . . Every time I see him, it’s always a surprise,” Rodman said.

The ex-“Celebrity Apprentice” contestant said relations between Kim and Trump “could have been a disaster.”

“Trump could have said something different, Kim Jong-un could have said something different, he said. “But I think that it’s fair just to say that both of them want to see what this meeting’s gonna do, so it should go fairly well but people just should not expect so much for the first time.”

Rodman’s entourage for the trip includes Chinese-American connector Mike Wang, and Joseph Terwilliger, a Columbia University neurobiology professor who’s taught in North Korea and has helped organize Rodman’s trips to Pyongyang.

The former Chicago Bulls star became unlikely pals with Kim when he first visited the Hermit Kingdon in 2013 for a “basketball democracy tour” organized by Vice magazine.

Kim, like his father Kim Jong Il, is a big hoops fan who used to wear NBA jerseys and Nikes as a teenager studying in Switzerland in the late 1990s, according to one of his former teachers.

“That was the time of Shaquille O’Neal and Michael Jordan,” Michel Riesen told NBC News.

“He always looked like a pro in his NBA clothes.”

Additional reporting by Tina Moore