User blog comment:IamJakuhoRaikoben/Chapter 431 & 432: My sword is... & Brair in Love, Review./@comment-209.129.168.31-20150502004301/@comment-61.8.84.218-20150502094833

I agree. Gray got his stripping habit out of his time learning Ice Magic, as he had to learn to cope up with / master the cold that went with this specific type of magic, and later it became a running gag for his character. Juvia's reason for stripping are... for fanservice, how original. -_-'