showza
An exclamatory word combining "Sh**!" (or shoot!), "Wowzer!", and "Yowza!" all into one word - typically when you learn about something surprizing that totally takes you off guard and hits you hard.
As an exclamation: "Showza!"
Showza day
This is the official day of Showza, dated in England as the 28th of November. This is widely considered the most important day of the year. Showza is an exclamatory word combining "Shit" and "Wowzer!" or "Yowza!". On this day you should yell Showza at the top of your lungs to let everyone around you know what an important day it is.
'Oh shit, it's the 28th of November already? That means it's Showza day!'
*gets on top of the desk at work*
'SHOWZA!'
*gets on top of the desk at work*
'SHOWZA!'