Hasta las chanclas is a common Mexican Spanish expression for being very drunk, built around the image of being in it up to your sandals. Online the short clip is used as a standalone reaction rather than as part of a longer scene, shared in chats, edits and soundboards when someone wants a fast, recognisable way to say a person is wasted. Its brevity helps it travel, fitting over party footage, fails and morning after jokes without needing any setup or translation for the punchline to work.