The Dirty Mind of Young Sally (1973)

Sally runs a mobile pirate radio stationwhich she operates from her vanwhere in her sexy and sultry voice she encourages her listeners mostly teenagers to use the music she plays to ball by She also takes calls from her listeners and even offers herself as a prize in a contest Her show is so popular it winds up turning on large numbers of the local population The authorities of course cant allow that to happen so they send out the cops to find her and shut her down