"When I saw the word non-binary/genderqueer and I read into it and I heard these people speaking", Smith told Jamil, "I was like, "Fuck, that is me". "I was like, 'F--, that is me'".
Consequently, he embraced his identity as gender-queer and non-binary.
The four-time Grammy victor admitted: 'You do not identify in a gender. You are a mixture of all different things. "You are just you...you are your own special creation", Sam shared during the candid conversation.
"It was another situation on holiday, every holiday I've ever been on, where everyone's by the pool and I have to take my t-shirt off and get in the pool".
The musician also laid out how he personally sees being non-binary, saying that he isn't either gender necessarily but rather "I think I float somewhere in between", the outlet reported.
"But I will never look like that because there's a bit of a woman in me that won't allow my body to move like that", he added.
As a child, Smith revealed that he was "chubby" and "carried extra estrogen" in his chest, making him self-conscious to wear a bathing suit and opening him up to bullying, including when a classmate grabbed his chest "on the playground in front of all of his friends".
Smith, who has been outspoken about his sexual orientation in the past, said he has been thinking about his gender using the same framework. Smith would also beg their mother to write notes to the school to be excused from swimming lessons.
"When I was a kid, I was chubby", Smith explained, adding that in their preteen years, they were "holding a lot of weight in my chest".
"I had breasts when I was 11 years old!"
"I was so self-conscious that it was affecting my mood everyday and my life as a teenager". It didn't really change anything.
However, Sam admitted he put back on all of the weight in a span of two weeks because he 'hadn't figured out his relationship with food'.
"It's the basis of all my sadness", he said. No one treats me the same, ever. "It doesn't feel manly to talk about how I feel in my body every day but that's what I'm trying to fight against".
"I remember even at the time not thinking that I looked that bad, at my biggest I didn't think that I was that big."
On Friday, Smith tweeted that doing the interview with Jamil "completely changed" his life.
This was the case in February when he posted a shirtless photo of himself on Instagram to "celebrate my body as it is".
"Yesterday I chose to fight the f**k back".