I actually accidentally did this at school way back when. My mate and I decided to have an "Excel" race, where we'd start at the top of the sheet and see who could reach the bottom first by holding down either down arrow or pg down (this is obviously fun when you're 15).
Anyway, I reach the bottom, many laughs are had, go back the top, continue with whatever bullshit assignment we'd been given and then sent it off to the printer. Went onto some top down mini golf flash game and pissed about on there for a bit, until the teacher stands next to me and slams down a massive pile of paper onto my desk. She didn't look impressed.
Turns out I must have put a space or some random character at the bottom by accident and printed it. However the biggest issue was that I'd put my name in the header for the sheet, so every single page had my name in the top corner.