(Ireland, informal, idiomatic) to cop on, stop behaving immaturely.
2016 January 13, Robert Mulhern, [http://www.irishexaminer.com/breakingnews/sport/british-army-gaa-team-debate-croke-park-have-more-or-less-told-london-to-cop-themselves-on-715534.html "British Army GAA team debate: ‘Croke Park have more…
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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