Give in

Margaret left the classroom and headed to her office. She hurried inside and locked the door. Double checking that the door was locked, she went to her desk. She stripped naked below the waist then sat in her chair and started fingering herself. She picked up a pencil and put it in her teeth and bit down on it.

"Mmmmmmmm!" she said.

All Margaret could think of was having that stud student fuck her over the classroom desk. She no longer tried to rid herself of such prurient disgusting thoughts, but gave into the fantasy as she fucked herself.

After several minutes of masturbation, she brought herself to orgasm. She took the pencil out of her mouth and panted to calm her breathing down. She could not believe she just masturbated in her office like some sex-starved bimbo.

After cleaning herself up and getting dressed, she made sure to deposit the tissue she used to clean herself in a trashcan down the hall.

She then drove home still thinking about different male students fucking her in various ways in various places on campus. By the time she was home, she was sweating and red-faced with shame.

Margaret hurried into her apartment to find Natalie on the couch studying. Natalie looked up, "Damn, what happened to you? Frightened by a huge cock?"

"Shut up!" cried Margaret. She had to stop thinking about sex, and her bratty little sister was not helping.

"Sorry," said Natalie standing up, "I'll make you some herbal tea."

"Um, fine, thanks," Margaret went into her bedroom.

Natalie made some chamomile tea and spiked it with just a bit more of the aphrodisiac. She brought the tea to Margaret who had taken off her suit and was wearing a bathrobe, "Here you go, sis. Sorry about all the talk about sex and cock and stuff. I know how you feel about sex and...."

"Fine, fine!" said Margaret, "Please, just give me the tea. I'm going to take a nice bath."

"OK," Natalie handed her sister the tea and left, giggling after she closed her sister's door.

She checked the status of the dildo and vibrator she had ordered to be delivered to Margaret's office. The delivery was set to be delivered the day after tomorrow.

"Wonder if she'll get a real cock before then?"