the act of urinating in an inappropriate/unnecessary location whilst participating in anti-social behaviour
Man 1 - Are you going for a piss?
Man 2 - Yeah, why?
Man 1 - Do you want a regular piss?, or a FUN PISS?
Man 2 - ... a Fun piss clearly..?
(man 1 takes man 2 down a dark alley, into someone's balcony area of a hostel)
man 1 - Piss there
(Man 1 starts to piss whilst a dirty mongrel walks into his stream)
The act of urinating in an inappropriate/unnecessary location for one's own amusement, whilst participating in anti-social behaviour.
Guy 1: I just had a fun piss on a dog.
Guy 2: Well I just had a fun piss off the roof of my hotel, beat that