My english teacher in high school had a giant cardboard cutout of Mel Gibson. My class worked together and stole it. And they sent ransom notes. This teacher really loved Mel Gibson. It was returned (for free, der).
The same teacher made really tough tests, but near the end of the year would allow the students to make her a test. The book the test had to be based on was Huckleberry Finn. YOUR grade was based on how poorly she did on the test; if she scored less than 60%, then you failed because you made the test too difficult. The closer you could get her to 60%, the higher your grade would be. A 60% corresponded to you getting a 100%, a 70% corresponded to you getting a 90%, etc. Also, all questions had to be multiple choice.
So the test I designed was incredibly easy for the first 60%. Here's one of the more generic questions:
"Jim, when describing himself, said:"
A) "actual answer"
B) Walt Disney is the overlord of a secret Cthulhu-worshipping cult of which Jim is the Grand Vizier.
C) He was the TX-1000, he came here from the future to destroy the supercomputer achitecture that would spawn a horrific, war-torn future
So naturally she got the first 60% right. The next 40% I had 1 question per page. The page consisted of the question, about a sentence long, and then a table of "fill in the bubble" answers for letters, numbers, symbols, etc. For example, here's one of the typical questions, although they were all pretty much like this one.
"What is the 262nd word on Page 94? Punctuation is important!"
She had to bubble in each individual letter, including spaces for multiple-worded answers. Essentially it was a fill-in-the-blank question that met the multiple choice requirement, because she could choose any of the English letters, numbers, or symbols for each part of the answer, and the answer could have up to 15 letters, numbers, or symbols.
My other idea was to have the test be a VERBAL test in a foreign language. She already knew French, but we kind of deducted that she didn't know Esperanto. We were going to write out the questions/answers in Esperanto and then get our squeeky-voiced friend to speak aloud the questions and answer choices to a loud melody that would almost drown out his voice. This was a lot more work than the idea that I actually used, so I didn't go through with it.