An excessive fear and or act of laziness a driver has of using their blinker to signal a turn or lane change. This is a major cause of car accidents, road rage, and traffic violations.
"Gee greg why don't you use ur blinker when u turn? All those people would stop honking!"
"Ah I'm just a lazy fuckin asshole. I don't give a shit bout following the law."
"Hmm I hope u get re ended dumb fuck get over ur blinker phobia"