A fantastic story from the US... more like this, please, yanks...
Mrs. Bergstrum the biology teacher clearly checked the wrong box when ordering dissectable fetal pigs from hog-bit providers Edmund Scientific.
What showed up instead was a reinforced drum of full-sized adult pig heads swimming in their own facial sweat. Making the best of her mistake, an attempt was made to dissect these in class, but this failed miserably as no one could get through the skull.
Sensing potential, someone slipped accidentally on purpose, a pig head ended up on the floor, a head was thrown, a girl screamed, and things went from bad to worse.
Soon enough, the unused heads began to disappear from their storage cabinet and show up in girls' lockers, the ball bin at the gym, staring up sadly out of the toilet bowl, etc.
For a few days, these heads were everywhere.
Interest waned when the fruit flies arrived.

Our Biology class ended up doing the fetal pig dissection at around the same time as our English class was reading Lord of the Flies. By the afternoon, there was a line of little heads on the ends of pencils in the garden outside the school. It was beautiful.

In Advanced Biology there were all of twelve of us, two of us being girls and the rest really comically nerdy sorts. It was brought to our attention that we\'d be getting to dissect cow eyeballs, a prospect which most reacted to with a fascinated sort of horror. Not me. Being the weird girl, I decided that my time of glory was here.

The cow eyeballs were passed about, we were paired up, and it was time to start the prodding. In a moment of exceptional luck and fantastic tact, I stabbed the cow eye with my scalpel, wiggled it toward the other girl in the class, prompting her to freak the fuck out and hit it with her scalpel which sent it flying in a beautiful arc, landing on the hand of another classmate, who batted it away in another wonderful moment of cow eye ping pong, where it eventually splattered against the flag.

God bless America.