Amber was glad to be getting out of school. She was the last one in the building, and it was late. She didn't like to be alone in the Science Building of the University, but she had to make up on her extra credit, or she was going to fail her class.
She was walking down the hall, starting to pass one of the science labs, when she heard a moan. Being that she thought that she was the last one in the building, Amber was afraid that some idiot had gotten themselves hurt, and she would have to stay longer. It was drawing near midnight, and she needed some sleep. But never the less, she didn't want someone to be hurt, so she went into the lab.
Amber looked around the lab, and didn't see anyone so she started to leave the room. When she almost reached the door, she heard the moan again, except this time it was louder. Amber looked around, afraid she was losing her mind, when she saw the storage room door cracked open in the back of the lab.
Amber went to the storage room to peek in to see if anyone was hurt, when she got the shock of her life. Crystal, from her Biology class, was riding the lap of their Biology professor. Amber gasped at the sight of the two, watching Professor Grady slap Crystal's skirt-covered ass as she bounced up and down on his lap. When she gasped a second time as Professor Grady started to sucked on Crystal right tit, it must have been loud, because the two stopped fucking and looked at her in the door.
Amber tried to back up and run for it, when she tripped over a stool as Professor Grady and Crystal came out of the room half-naked. She then fell and hit her head on the floor. Amber woke up on the couch in the storage room to the sounds of her professor and her classmate arguing.
"Damn it, Crystal. I thought I told you to lock the door, in case someone was still in the building."
"I did, but I apparently didn't shut the door all the way. You didn't seem to mind, though, seeing as you were moaning when I was riding your cock."
"That's not the point. Now we have to worry about Amber exposing us. You can be expelled and I can lose my tenure. Not to mention the fact, that my wife will have a fucking cow when she finds out I was banging some student, instead of grading papers like I told her. It's a damn good thing that we don't have kids yet. Fuck!" Amber tried to sit up, but her professor saw her and pushed her back down on the couch gently.