My Surgical Student
Carissa and Nyxon are back in the infirmary for a secret session of gassing. Carissa shows her surgical student the gas cart then suggests she tries it out. She begins to catch woozy and lays down for a full on gas session. They take turns trying the mask on and smelling the gas. Then the teacher shares the mask with her till they tumble into a deep sleep together.
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Source: sleeppeeps.com