content: Well, considering that the biggest text is WTF, and in the upper left corner there is another phonetic spelling of buttock, it looks intentional. I could see some IRL trolls wearing clothing just for a label that says foreskin.  If the design is decent and the material isn't incredibly uncomfortable, I'd say they're going for the niche that goes for hilarious engrish sort of confused and late to the party asian knockoffs of western pop fashion. Some of the things I've seen I think must be westernized children of parents in the textile industry designing tongue in cheek engrish stuff in order to sell more to both people who think it's a hilarious mistake, as well as those who catch the wink and the nod.