"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 discovering her mother is a potential lesbian and is cheating on her dad, Jessi is then 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. Meanwhile, Andrew and Missy are struggling with their relationship, as they try to keep it a secret from their parents.
Also, Nick grows jealous of the amount of time his Mum and Jay are spending together.