be on the piss

be (out) on the piss

rude slang To go out and drink alcohol. Primarily heard in UK, Australia. My friends and I were out on the piss last night, so I hardly remember anything at all.See also: on, piss

be on the ˈpiss

(British English, taboo, slang) be out at a pub, club, etc. and drinking a large amount of alcohol: I’m not sure if Jerry will be at work today — he was out on the piss with his mates last night.See also: on, piss