It’s easy to fall into a parasocial relationship with Hannah Berner — open Netflix and she’s talking about shower sex; open your podcast app, and she’s explaining that “fart walks” aid digestion; scroll through TikTok, and she’s asking people on the street if they urinate in hot tubs.

Over the last few years, Ms. Berner has made herself ubiquitous in the internet ecosystem, disarming viewers with her unfiltered humor and confessions.

Like many celebrities of our time, Ms. Berner, 33, has an eclectic résumé. She ascended to minor fame in 2019, when she was on the Bravo reality show “Summer House” for three seasons. After exiting in 2021 following an unexpected villain arc, Ms. Berner pivoted to focusing on her standup, becoming known as a “girls’ girl” comedian who jokes about involuntary bodily functions in one breath, and guns the next (“If I had a gun, I would lose it in my room every five minutes. Can someone call my gun?”).

As of late, that C.V. includes a summer Netflix comedy special, “We Ride at Dawn”; a cross-country tour for the live version of her popular podcast, “Giggly Squad,” with fellow host Paige DeSorbo, concluding at Radio City Music Hall in January; and a forthcoming book by the two, “How to Giggle: A Guide to Taking Life Less Seriously.”

But before there was comedy or reality TV, there was a ball, a racket and a net. Ms. Berner spent her childhood, adolescence and college years training to become a professional tennis player.