Said (poo-zah)
As 'phuza' is the traditional zulu term for drink, it follows that 'phuza Wednesday' is the act of drinking (most commonly binge drinking) on a Wednesday night. and can be applied to any night of the week really.
This has become a burgeoning tradition among South African youth, a mini weekend on a wednesday
"Let us go and make a PhuZa wednesday with the Sunday Punchers"