Welcome Back, Kotter (1975)

Season 3: Episode 26

Rosalie ""Hotsy"" Totsy has grown up ... a little too fast. The Sweathogs go to a local strip club on a dare, and learn that Hotsy has gotten a job performing there (yup, she bares all, unknowingly in front of her former classmates). Vinnie, Freddie and Epstein all ride Hotsy's case, but Arnold is sensitive to her plight. Seems that, during a coversation with her former teacher Gabe, Rosalie really lived up to her nickname one night and got pregnant. And getting a job at a strip joint is the only way for this single mother (the baby's father had left Hotsy) to support her child. Gabe and Arnold convince the others to give Hotsy Totsy moral support, and they also refer her to a social agency which can help her finish school and find a more meaningful job.