In the Harry Potter fanfic Harry Potter and the Methods of Rationality:
You're giving me a time machine to treat my sleep disorder.
You're giving me a TIME MACHINE to treat my SLEEP DISORDER.
YOU'RE GIVING ME A TIME MACHINE IN ORDER TO TREAT MY SLEEP DISORDER.
"Ehehehehhheheh..." Harry's mouth said. He was now holding the necklace away from him as though it were a live bomb. Well, no, not as if it were a live bomb, that didn't begin to describe the severity of the situation. Harry held the necklace away from him as though it were a time machine.
- Played With, in that the rest of the characters are perfectly normal, and Harry is simply significantly more sane than the average person. (Most of the time, anyway.)
- By Word of God, characters intended to meet this trope include Harry, Hermione, Professor McGonagall, Professor Quirrell, Draco, Neville, Daphne Greengrass, Susan Bones, Mad-Eye Moody, Amelia Bones, and Fawkes. Note that in many cases, these are the same characters whose madness is being contrasted against.
- This may be a touch of real life. Eliezer Yudkowsky regards himself as one of the few sane people in the world, and has published a series of essays on how to be sane. Many people regard him as crazy for this.