Welcome!
There has to be a story behind the username?
There is but not as exciting as you might imagine...
I went to college at Auburn and at that point there was this little dive of a place to eat late night hot dogs and get homemade malts called the "Sanifreeze". You can imagine what a combination of chili dogs on top of a night of drinking produced so most everyone called it "The Flush" or "The Saniflush".
It was torn down in the 90's but there were a couple of generations of Auburn students who knew it intimately including my parents so when screen names became a thing for message boards and profiles 15 years ago I adopted the moniker.