Dallas Schoolgirls (1981)

High school graduate Heather leaves New York to spend a hot summer with her cousins Bonnie and Cindy in Dalls, Texas. they have been re-united after a gap of 5 years, and she sees that a lot has changed. except for Mr. Cobb, the pervert who used to babysit them. now he spies on them, as they share some raunchy stories and uncover secrets from their pasts.