Lager lout - Idioms by The Free Dictionary
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A loud, obnoxious drunk man. Primarily heard in UK. When I went to England, I accidentally ended up in a pub filled with lager louts.
a ˈlager lout (British English) a young man who drinks too much alcohol and then behaves in a noisy and unpleasant way: The police are planning to crack down on lager louts this summer.