Tana Mongeau claims she had sex with YouTuber Cody Ko when she was just 17 and he was 25

Tana Mongeau has claimed that she and YouTuber Cody Ko had sex when he was 25, and she was just 17-years-old.

The social media personality had been on the popular podcast Cancelled, which she co-hosts with Brooke Schofield, when she made the shock admission.

During a live show, Mongeau had been answering questions from fans and revealed a bombshell about her sex life.

Mongeau was asked about who had the smallest manhood of those that she'd slept with, and she replied: "Oh my God, no one look at me."

She continued: "Cody Ko. I can say that, I was literally 17."

While she didn't share how old fellow YouTuber Ko was at the time, people quickly worked it out.

Mongeau is now 25-years-old, while Ko is now 33. With their eight-year age gap in mind, it meant that Ko would have been around the age of 25 when he allegedly slept with Mongeau.

Noting this, one user commented on a now viral-video of Mongeau giving her answer: "17 when he was 25 is insane."

Another replied: "IM SORRY NO THIS CANT BE CODY NOOOO."

A third added: "WHEN I SAW MY JAW HIT THE FLOOR WHEN SHE SAID CODY KO. I literally mean it."

Someone else mentioned his wife Kelsey Kreppel, writing: "I just know kelsey is in shambles over this."

UNILAD has contacted Ko and Mongeau's reps for comment.

Mongeau and Schofield have recently been touring around the US to do live shows of their podcast, and Mongeau has since taken to social media to thank fans for attending the tour which she says has 'changed her life forever'.

Sharing a host of snaps from her travels, the 25-year-old said: "after sleeping in my bed, showering in my shower, and curing my raging case of traveler’s diarrhea (kms!) i can see so clearly how this tour changed my life forever."

Mongeau continued: "how you all changed my life forever. thank you for giving us a microphone and caring about whatever the hell we have to say. thank you for telling me your stories, for saving my life. thank you brooke for choosing to share our girls nights with the world. thank you to my awesome friends and team for showing up, rain or shine. thank you for watching the cancelled podcast."

Some of her 5.6 million followers are already calling for her and Brooke to go back on tour, suggesting locations like Boston, Toronto and even the UK for their next one.