“Sorry if I sound out of breath,” a panting Daniel Radcliffe told HuffPost on the phone recently. “I accidentally didn’t notice that I got out on the wrong floor of the building I’m staying in and fully just ran into somebody else’s apartment ... thinking that it was mine.”

“Luckily they weren’t in there. I suddenly just sort of walked in and said somebody’s done something ... and where are all my things? And then just fully sprinted out of the room in blind panic,” he added.

“I can probably tell this story now because at the time my parents didn’t know that I smoked, but they do now,” he said. “At the time when I was in theater, I would sneak up to Lorenzo’s room and ask if I could jump out on his fire escape to smoke. Again, maybe I shouldn’t be saying this.”

Pisoni wasn’t smoking, Radcliffe clarified. “He was literally like, ‘Yeah, fine, you can use my fire escape.’ I had had my first cigarette before that, but I won’t say when. I will spare my parents’ retroactive disapproval.”

After Radcliffe learned Pisoni grew up in the circus, the former “Harry Potter” actor couldn’t stop pestering his co-star about it. Radcliffe eventually attended an early version of Pisoni’s show, “Humor Abuse,” in which he told the story of his childhood. That sparked the idea behind ― and eventually led to the creation of ― “Circus Kid.”

“He’s had this incredible life, but he’s incredibly grounded and has a level of self-awareness that is not always common in people that kind of know they’ve had extraordinary lives,” Radcliffe said.

“We became very good friends,” Radcliffe told Fox News. “I started learning about his life… and then I became the most annoying [person]… Like, ‘Oh, you were in the circus?! Can you juggle?’ It was annoying I’m sure, but he was very sweet and humored me."

“I think I'd be hard-pressed to find parallels in our families and how we dealt with it all,” explained Radcliffe. “Lorenzo’s parents are separated. I’m very lucky my parents are still together and are a wonderful team. And Lorenzo went off on his own for a lot of his childhood. I was generally chaperoned by one or the other of my parents… But it all just made sense.

When you’re living in a life where there really isn’t a blueprint for it, there’s nobody you can look to, there wasn’t a family my parents can go and say, ‘OK, so what’s it like when your kid gets involved in a massive franchise?’ You just have to go, ‘Let’s do this ourselves.’… I certainly wouldn’t change anything about my life or how I grew up because it made me the person that I am. I’m actually becoming more and more OK with that person.”

“The one book that I have to recommend to everybody at the moment because it’s changing a lot of how I see things, frankly, is a book called ‘Inferior: How Science Got Women Wrong and the New Research That’s Rewriting the Story’ by Angela Saini. I feel like you’ll read it and probably buy it for a lot of other people because that’s what I’ve been doing with it. My friend Jesse, who is a female physicist, bought it for me. It’s basically about scientists all the way back to Darwin. A lot of the research that has been done into and about women has been filtered through a very male, sometimes deliberately, sometimes not deliberately, sexist filter of biases. We like to think of science as being above bias but of course it’s not because it’s just human beings. It’s an amazing story of this research and what the information itself is, but it’s also the story of how scientific research is done, how it gets published, how it gets to be in the newspaper. It’s just a fascinating look at that world and I can’t recommend it enough.”

This unique event features a roster of martini glasses that are autographed by celebrities or American heroes and then designed by noted artists in keeping with the personality and accomplishments of the signer.