A beanie cunt is a person that is always seen wearing a beanie and is often too lippy for their own good. They are actively pestering others with their incessant niggling.
Bo: Say, what is it with that guy in the beanie always being rude and smarmy??
Izzy: You mean Jack? He's a beanie cunt, that's what beanie cunts do.
Izzy: You mean Jack? He's a beanie cunt, that's what beanie cunts do.
by Ziggy Crankhandle October 5, 2014