A non-standard word consisting of the words stagnant and quagmire. Spoken by the malapropism-spouting Little Carmine "W" Lupertazzi, in the Sopranos' episode "Long Term Parking" from Season 5. Obviously, Little Carmine wasn't paying attention during English class.
When windowsills and blinds do not match in color or shape. Such as, if our windowsill is orange and your blinds are blue than you have a smagmire window.