You stop running and lean up against a wall. At this moment you feel a strange sensation in your rear. It slowly builds until you have a sharp pain at the base of your rear. Feeling behind you, you find a lump growing on the base of your rear. As you touch it it grows larger push back at your hand. Pants straining, you are forced to lean forward a bit until, with a tearing sound, a donkey tail pops out of the back of your pants. It begins to wave slowly behind you.