This isn't connected to the classic exam-room urban myth, but one day school gippo and twelve-year-old Aphex Twin lookalike Louis Gibbs decided that his Dr Martens were most ideally used as pencil destroying machines. Maybe they were, in some ways. But not pencils that were pointing upright. And definitely not with a stamping action.
Those pencils slid through his Dr Martens as though they were fashioned from wet toilet paper. Louis rolled around on the floor screaming after jumping off the table onto one of these pencils. When a teacher entered the classroom and saw what had happened, he asked "Are you able to pull it out?" with an obvious lack of giving a shit.
I literally get high, giddy and sick when I remember seeing less than half a pencil sticking out of the sole of his shoe. Groo.