|1.||Shaz and a Maz|
Simply to masturbate whilst in the shower.
Western Australian slang;
Shaz = Shower.
Maz = Masturbate.
These words do not have to be used together and can also be used singularly, to abbreviate the respective words.
Person 1: "I'm off for a shaz and a maz."
Person 1: "I'm off for a maz."
Person 2: "I'm off for a shaz."