I invented this word throughout my playing of the old game Aspereta. Being an MMORPG, people would type smaller versions of words, instead of the full thing. Here's how it went about:
-Instead of please, people said 'plz
-Instead of plz
, I purposely mispelled it as 'plx
, when spoken out loud sounded like 'plix' to me, so I started to say 'plix'
-I mispelled 'plix' as 'plox', then just kept doing it on purpose