Andrew decides he can't push it back any longer. Wanting some privacy Andrew goes to sneak off outside where he stands completely still behind the building, closes his eyes and let's his bladder relieve the tension it's been carrying. As he let's go he feels his diaper fill up with the warm piss and be absorbed by the diaper, as it absorbs the wetness it begins to swell up and discolor to a sort of yellow at the crotch.
Andrew would never admit it, not now anyways, but he was starting to enjoy this. The fact he could go where ever he wants without anybody knowing and the feeling of the diaper, especially when it's when wet, made him feel... Well turned on. He found it weird but could feel his dick swell up and turn hard as it felt the wetness of the padding. When Andrew was finally done he realized his bladder wasn't the only thing that needed relieving and so he decided to...