ox1337!
My username came up when I was changing my identity on all the slacks I was in.
I realized that I was using a lot real personal info on a lot of slack and websites, so I decided to change them all.
I wanted something that would remind me of magic, unnatural powers, witch and alike. So I remebered of the word Hoax but I found it too boring, so I cut it smaller into ox that sounds about the same and add the perfect numbers :D