What do manspreading and a Grexit have in common?

Grexit, Brexit and manspreading - "the practice whereby a man, especially one travelling on public transport, adopts a sitting position with his legs wide apart, in such a way as to encroach on an adjacent seat or seats," in case you didn't know - may seem unlikely bedfellows. But as of Thursday they are new entries on OxfordDictionaries.com, the free, online English dictionary from the Oxford ...