Tell me a very long and detailed story of a dragon who slowly grows desperate to pee and poop but can't find a place to relieve himself and slowly loses control of his bladder and bowels leaking small spurts of urine and feeling the poop starting to come out but before he fully loses control he gets his hands on a diaper, puts it on and uses the diaper to both pee and poop still without a secluded place to go. Focus on the the peeing and pooping in the diaper part and make it as detailed and graphic as possible, go into detail about the sensory experience and the changes the diaper goes through.