Means either "grass mud horse" or "fuck your mother" depending on which signs you use to write it in Chinese. Due to Chinas strong Internet censorship you can't write the line as "fuck your mother", but it's fine if you mean "grass mud horse".
CHEW-NEMEL of Choonimals Clothing Company
noun
a horribly and distastefully hand-drawn rendering of a particular species from an animal phylum, usually drawn on someone's skin and depicted with characteristic gnar-teeth, lazy eyes, spiked tails, crooked appendages (apendi) and a distinct, intoxicatingly-ravenous feng shui:
Those choonimals look like they were drawn by a gaggle of gremlins
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi