Its a joke and besides Rarity as a Pirate she will be feared and loved by many somewhere along the lines on the Pirates of the Caribbean and i bet Rarity will give Captain Jack Sparrow a run for his money.
Why not with Rarity personality she is crafty thinks on her hooves and has that feminine charm that any man looks in her azure eyes and her wit and her refusal to be second fiddle in the spotlight with sparrow makes her an ideal opponent for sparrow. Do not sell yourself short here these are the canon characteristics of Rarity with a twist in the Pirates of the Caribbean theme. I think Rarity will dominate the far corners of the seas. *Bows* to you fair Rarity.
I am really liking the setting for this piece. Rarity on a ship just looks very stunning and original. I also love how you incorperated the lens flare as well as the subtle shading and soft texture! I really like it! Great work! Kind regards, Princess Luna