Top Definition
'Piss-arse' is a synonym (however, not exclusively a synonym) of 'diarrhea'. The literal meaning is 'an arse (or anus) that expels piss (urine) rather than faeces'. Breif etymology: It is believed the original usage was as an alternative word for dysentry and developed a secondary usage as either an insult or as baseless slander.
Statement: I've got piss-arse from eating raw chicken
Insult: You're a piss-ared mother shitter; I saw it you dirty scumbag!
by lipase December 23, 2013
2 more definitions
is the frequent passing of loose, watery and unformed faeces from the result of food that is not meant for human comsumption.
That lunch has given me piss arse. I'm never going back
by Bryce Kemp April 27, 2009
Used around Milton Keynes and Newport Pagnell as a referance towards drinking carlsberg, (brewed in Northampton neighbouring town) Derogitory term for a poor class of lager.
Awwww narrr bruvv I ent drink here they've only go Piss Arse on tap!
by Drew Russell January 29, 2009

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