An elderly citizen who greets you at the door of a Wal-Mart. He or She tends to be short in stature, and have no other purpose but to create awkwardness as they force you stare at the mysterious crap at the corner of their mouths.
"I tired of those freakn' Wal-Martians trying to get me to check out the isle of who gives a damn!"
(n.) 1. A person who attends Wal-Mart frequently
2. Someone who is currently in attendance of Wal-Mart
3. Someone who dresses as if they shop at Wal-Mart
"I'll be the first to admit, I'm a Wal-Martian. I love that store"
"Look at all these Wal-Martians, must be a busy day"