In 10th grade during an end of year standardized test, I finished and fell asleep on my desk. I later ripped an enormously loud fart that woke myself and the class. I just pretended to still be asleep and to this day, no one knows who shook room 221.
[spoiler]Keep in mind, these tests have a no-talking policy, so it was deadly quiet when I broke the silence.[/spoiler]