Piss Mint 

The little 'sweets' found in urinals that help to clean them and eliminate the odour of stale piss. (Usually found in yellow or blue.)

"Oi, mate, your breath smells like a urinal, have you been eating piss mints?

Piss Mint by Ray Pist February 2, 2007

Minty Piss 

Slang for 'Mojito', the popular cocktail which has a distinctive minty taste. Should one be opposed to such a taste, one may refer to Mojito as 'minty piss'.

'What is this foul drink?'
'Mojito'
'Tastes like what I can only describe as minty piss'

Minty Piss by themintyone September 10, 2011