new pet peeve

people who call any black & white cat a "tuxedo" cat.

according to wikipedia;

To be considered a true tuxedo cat, the feline's coloring should consist of a colored coat, with white fur limited to the paws, belly, chest, throat, and often the chin - sometimes the tail. Tuxedo cats can appear to have goatees due to the black coloration of their mandible, lower jaw, and chin. White muzzles or a white coloring on their faces are a common attribute of tuxedo cats.[6] Most tuxedo cats are also "black-mask cats" with a complete white blaze, a common name for felines who, due to their facial coloration, look as if they are wearing a black mask over their eyes, and often over their entire head. The ideal color distribution is symmetric, and the white areas are of modest size and limited to the desirable areas.

there are other bicolor patterns & the article has a couple of charts to understand the difference between them.

like most pet peeves it is a bit nitpick-y, but that's just the way some are.