its not that big of a deal. i think consider it a cultural difference. sais not the first male japanese character to expose his midriff which leads me to believe its more acceptable. hell. my favorite character to play as in the king of fighters series is benimaru, and i get teased enough for playing as him, till i kick someones ass with him. i suppose i will have to do the same when sai makes it into one of the naruto fighters