Canadian name for Corona beer.
It can be identified by its bad taste, yellow colour and low alcohol content. Often seen on hot sunny days sitting in direct sun light adding to its already rotten flavour.
eg.1 - Mike was camping up the road at Spray lakes Canmore for the weekend reached into the cooler and to his horror pulled out a Corona and screamed " Who bought Mexican Piss Water!"
eg.2 - Doug drove his friend to the liquor store to buy beer Doug's friend returned with a case of Corona, Doug turned to his friend and said "you paid money for Mexican Piss Water ?"