Tina isn't invited to her classmate Tammy's Bat Mitzvah, but ends up at the party anyway, because Bob and the family were hired to cater. A total "Bat-zilla," Tammy's theme is, well, "Tammy," and despite the invite snub, Tina is excited to scope out the BFOS (boys from other schools). Things go awry and Louise and Tammy end up missing, so, to her total delight, Tina is left center stage.