Hows about some photoshopping?
Replace Ned Stark with Yoda, and use the phrase "Coming, Winter is."
Or a pic of a buxom Ariel diddling herself, eyes glazed and panting, with the phrase "Winter is cumming"
Or a pic of some jihadis, bundled up in cold weather gear, charging at the viewer, and the caption "Winter. IS coming."
The English language is sufficiently broad enough for us to be able to fuck with their precious trademark/copyright, and they won't be able to do a fucking thing about it.