Spike wants to prove to Starlight that he can hold his pee longer than her. Well, she doesn't care for a competition, but Spike is gonna make it one anyway.

Contains: Omorashi (holding pee, desperation), urination, masturbation, and I guess Spike is underage. But he's not a horse so it's not foalcon. Hatchlingcon, maybe?

The cover art was made by Frist, used with permission. This story was written for him and a couple of other friends, so I hope y'all enjoy. This isn't my fetish, but I do like writing things like this for friends and stuff.

Cover art derpi id (nsfw): 2028753