Definitions by Ihavenoideawhoyouare

Fun piss

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

Fun piss by Ihavenoideawhoyouare April 23, 2010