"I Survived Jessi's Bat Mitzvah" is the ninth episode of the first season of Big Mouth. It is the ninth episode of the series overall. It premiered on September 29, 2017. It was written by Kelly Galuska and directed by Mike L. Mayfield.
After Jessi Glaser finds out that her mother is a potential lesbian and she is cheating on her dad, Jessi is forced to complete her Bat Mitzvah. This is further complicated when she must wear an unflattering "boxy" dress.
While at the party, Jessi learns that her mother's lesbian lover is the temple's cantor who is hosting the event, she rebels by seeking comfort in Jay Bilzerian. Meanwhile, Andrew Glouberman and Missy Foreman-Greenwald are struggling with their relationship as they try to keep it a secret from their parents.
Also, Nick Birch grows jealous of the amount of time his mom and Jay are spending together.