Sandy straddled me, and lowered herself onto my face. I assumed I would be eating her pussy, but she then spread her cheeks and sat her reddish brown...rosebud right down onto my mouth. “Lick my asshole”, she commanded. I had never done this before, and I hesitated……which led to a smack across my still sore balls. “This is the last time I will ask you to do anything twice tonight”, she said, in an ominous tone. I quickly stuck my tongue out, tasting her tart asshole. She began to move. Maude Peterson was at the nurse's station and she knew from experience that Maude would sit there and read her romance novel and not move unless a monitor sounded off or it was time for medication rounds. She would have plenty of time to do what she needed to do.She prayed that nothing would go wrong. She had waited almost five months for the right circumstances. One last look to make sure the hall was clear and then she slipped into room 521. The patient was heavily medicated so he should pose. Moreover, the first floor was like a storage space for old books. I don’t know if anyone has ever used it.After a few moments of thinking, I went upstairs and saw her looking for books on a shelf. I sneakily grabbed her from behind – covering her mouth with one hand and the other hand sliding onto her bare waist under her t-shirt.“Hi, gorgeous!” I whispered into her ear.She was startled. She tried to murmur in her muffled mouth.“Don’t scream. I know you like this.” I loosened my grip on her. As I had collected my items and was going to pay the bill, I thought I saw a familiar face in the supermarket. As everyone had masks on, I wasn’t sure. But she caught sight of me staring at her and called me over. She had been my biology teacher from school. I was kind of anxious in approaching her as 7 years had passed since school had ended and I was pretty sure she had forgotten me. But it turned out that wasn’t the case!Back in school, I had a huge crush on my biology teacher. So did most.