Strange visitors

"All right, class, settle down." Clara said as she walked into a class full of rowdy pupils. She stood in front of the board and looked around, "Come on, now, let's get started. Hey... what is going on?"

Clara realised the class were not looking at her, but rather over her shoulder. She turned to the board to see a figure drawn there, obviously feminine, wearing a dress that was rising up above her very ample and bare buttocks. Above the figure was written "Miss O has a big bum".

"Very funny." Clara scowled, blushing, as she looked around for the board eraser. "I told you, the dress shrunk in the wash. And I was wearing knickers, I'll have you know."

Clara gave up looking for the eraser and tried to stand in front of the rude drawing, managing to block the picture but not the writing, which was now positioned above her own head. She tugged at the hem of the red dress she was wearing today, hoping to avoid a similar malfunction to yesterday's one portrayed on the board.

"Come on, let's read the next chapter of Pride and Prejudice." Clara insisted, "I think we were on... er... page 153. Jessica, can you start, please?"

The pupil she had chosen began to red the book and Clara leaned back against the board, sighing. As much as she tried to be a successful teacher, the young woman always found herself embarrassed somehow. As the student continued droning without enthusiasm, Clara's eyes wandered to the window, just in time to see something shiny go past.

"What the..." Clara breathed, moving over to the window and looking out. She got there just in time to see something she did not recognise specifically, but was definitely some sort of robot, go around the next corner.

"Carry on, class." Clara said, "I'll be right back."