Rarity takes a long shower.

After helping Applejack relieve some stress, Rarity finds herself covered in mud. She needs to clean herself, but when you're so relaxed, you just feel the need...you know what I'm talking about...

It's a one shot.

Rarity enjoys helping her friends (She is the element of generosity after all), but sometimes when she is helping them relieve stress, it can get a little dirty. Rarity just needs to clean herself...and sometimes, you get dirtier in the shower...