I used to work with a guy that was seriously cosplaying as an Native American. He was deadly serious about people believing him to the point where he was constantly dragging people to HR if they so much as rolled their eyes.

Beads, feather (stop laughing), long black hair (dyed - dude we can see the blonde roots), spray on tan, contrived accent and speech cadence.

His parents visited from the Netherlands. Yeah. They were just as baffled about his claims as we were.