Piss-arse 

'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!

Piss-arse by lipase December 23, 2013

Piss arse 

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!

Piss arse by Drew Russell January 29, 2009

Piss arse 

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

Piss arse by Bryce Kemp April 28, 2009

arse piss 

When you are so sick that your poo comes out like piss.

I was drinking water and it was going right through me! It was arse piss.

arse piss by ctdf April 18, 2006

Arse piss 

The side affect of Salmonella aka diarrhoea

I refroze my chicken nuggets and they gave me arse piss.

Arse piss by factmachine December 1, 2014

arse piss 

A sexual fetish as follows:
The dominant male, after drinking some liquid prior, takes a pair of forceps (as used to help deliver babies) and uses them to forcibly hold open the submissive woman or man's anus to a width suitable for urinating into. He them urinates into the dilated asshole, filling it with urine. the forceps are then removed, and the anus allowed to close fully. The recipient of the asspiss is then allowed the great pleasure of passing the urine out his or her anus, as if defecating, only liquid. This process is quickly growing in popularity, and looks set to move mainstream within the next few years.

hey, bitch! I'm gonna give you an asspiss whether you like it or not!

arse piss by HOB November 1, 2006

taking my arse for a piss 

Explosive, liquid diarrhea.

Example
Vince: "You've been in there for a while!"
Nelson: "Heavy night last night, just taking my arse for a piss!"
Vince: "I'll avoid trap two"

taking my arse for a piss by ShitDemon January 8, 2015