A man or woman who engages in, or enjoys mindless activities that require very little intellectual ability. That brings out the alpha or macho side of the human personality.
Such as watching pro wrestling, going to truck pulls, wearing bandanas or the wearing of any sleeveless shirt with a beer or animal on it professing your toughness.
Some refer to these people as red necks,and we do here as well. More often they are known as greasers.