is a man of many talents, including some spot-on impressions.
According to Manganiello, he'd been a life-long fan, and got the opportunity to meet Reubens at an HBO Emmys party.
"I ran over to him, told him I was the biggest fan in the world," Manganiello said, recounting how he asked Reubens to accompany him to an art exhibit featuring the works of director Tim Burton -- who made his directorial debut with Pee-wee's Big Adventure in 1985.
After that, the pair became friends, and Manganiello was able to pick up on some of his mannerisms, which allowed him to nail the comic character's iconic laugh. Fallon, also a Pee-wee Herman fan and impressionist, joined in on the fun and the pair riffed with Pee-wee impressions.
But Manganiello actually has quite a few impressions in his arsenal -- including late comic icon Rodney Dangerfield and Kermit the Frog, which was shockingly pitch perfect.
He even showed off his impressive impression of friend and fellow body-builder Arnold Schwarzenegger, which put Fallon's to shame
Manganiello appeared on the Tonight Show
to promote his upcoming animated comedy Smurfs: The Lost Village
, and the former True Blood
heartthrob said he's excited to finally be part of a movie aimed at a young audience.
"All of my projects for a very long time were only seen by adults," Manganiello explained. "I do a lot of work at the Pittsburgh Children's Hospital, and I would go there, and I'd say hi to the kids… and the kids would turn and go, 'Who's he?'"
"I'd say, 'I'm a werewolf on a TV show,' and they'd go, 'You're not in Twilight,' and their mom would kind of put her hand on [their hand] and go, 'No, no, he's on Mommy's favorite werewolf show,'" he joked.
"Yeah, Mommy's seen Magic Mike 80 times," Fallon added, laughing.
"But now, they still don't know who I am, because [in Smurfs] I'm a cartoon," Manganiello joked.
"You'll just have to stand out in the hall and just use your voice," Fallon suggested.
Earlier in the evening, Fallon had Manganiello, actress Jessica Chastain, and Tariq Trotter of The Roots play a fun game of charades, and the Smurfs star was in it to win it.
Smurfs: The Lost Village hits theaters April 7.