The sassiest cat in town, Mr. Gavin J. Grant, has a brand new piece of fiction up at SciFiction called "Heads Down, Thumbs Up". Don't take my word for it. Go see:
Mrs. Black repeated her question, but then the border wobbled over us again. She sighed. There was a knock at the door, and the school secretary came in.
"Yes, yes," said Mrs. Black before the secretary could say anything. "I know, I know."
She turned to us. "Boys and girls. Two minutes of heads down, thumbs up."