1. Accidentally putting your hairy big toe in another guys butthole, therefore getting a little poop under the nail. It is only a Hairy Gremlin if the toe is hairy, otherwise it would be the Hairless Gremlin.
While Nigel and I were mountain biking, he went off a jump and accidentally gave me a Hairy Gremlin. His toe smelled like beef stew for 3 weeks.