Finn Wolfhard is ready to take on “adult films” after the conclusion of Netflix phenomenon Stranger Things, the actor joked during his Saturday Night Live opening monologue, which was crashed by co-stars and friends Gaten Matarazzo and Caleb McLaughlin.

“I gotta tell you: It feels so amazing that 400 million people got to watch me go through puberty. What a dream,” he quipped during the beginning of his opener.

The inaugural host said he experienced many firsts on camera while filming the Duffer Brothers’ fantasy drama series — from his first kiss to the first time his voice changed, as well as “the first time I learned what a woman looked like down there.” A clip of the show then played, as a young Mike Wheeler reacted to a Demogorgon’s head opening up.

“I am a man,” the 23 year old announced as a jazzy instrumental played in the background.

After cracking some obligatory jokes about his sparse facial hair and doing a spit-take of whiskey, he declared, “Stranger Things is over, and I’m not a kid anymore.”

“And neither are we!” chimed in Matarazzo and McLaughlin as they popped up on the Studio 8H stage.

“Any time you read ‘former child star’ in a headline, it can only mean good things,” Matarazzo joked, as McLaughlin sarcastically thanked viewers for relentlessly posting about “our changing faces and bodies” on social media.

Later on in the evening, the Lorne Michaels-helmed sketch show spoofed the show itself, skewering audiences who believed a secret ninth episode would be dropping on the streamer. In the pre-taped sketch, the Stranger Things universe sprawled numerous ’90s-era-inspired spinoffs, including “Strangerous Minds” featuring Steve Harrington as a teacher; and “Mike in Manhattan,” a Sex and the City-esque series. In “The Wheeler Report,” Nancy Wheeler reports on the O.J. Simpson chase. And, in another spoof, the entire Stranger Things story is retold through the perspective of an “insignificant character”: Mike Wheeler’s dad, played by Mikey Day. Meanwhile, Will Byers doesn’t receive a spinoff because his coming out scene is still ongoing. In a kicker, Kenan Thompson plays Eleven, donning a hospital gown and wielding an Eggo waffle.