I'm going to start doing stuff like this on Math tests.
The best one I've actually done before was in Grade 10 history where we had to lable all the countries on a map of Europe, circa 1915. I didn't know one of them so I put "Otisburg", with the backwards "s" and everything.
When I got the test back my teacher had written "Otisburg?" "OTISBURG?!" underneath it on the page.:lol: I was amazed she got the reference. Or maybe she was just furious.