Straff för en flicka som bär en ryggduk

A girl is caught in a surprise underwear inspection. The normally serious girl is actually wearing a red loincloth. The teacher takes her to another classroom to punish her. The girl is tied up and hung. Her red loincloth peeks out from under the skirt of her sailor uniform. A vibrator is attached to it, and she endures the embarrassment If the vibrator comes off, an even more severe punishment awaits.