During a raunchy game of Truth or Dare, it comes to light that Rarity has a certain 'interest' in gloryholes. An interest that Twilight Sparkle just so happens to share, and frequently indulges in. After a little coaxing, Twilight convinces her to accompany her for a session, and Rarity may find that it was more than she'd even hoped it could be.
Proofread by Ireyah.
When Twilight Sparkle hears a rumor about a certain 'service' provided in a local bar where stallions can relieve themselves through a gloryhole, she gladly offers to take over the job for a day as a chance to live out her gangbang fantasy.
Twilight and Rarity have some gloryhole fun together