The world of EU law woke-up on June 24th with a hangover. Every member of our academic community is or knows well friends and colleagues studying and teaching EU law in the UK whose futures are in question. Yet, the referendum raises a larger scientific question for EU law. As well as the technicalities of divorce and variable geometry that will deservedly receive renewed attention, there is the broader question about the kind of political reshaping of EU constitutionalism that Brexit will bring about.