A man (usually white but may also be Asian or Latino) who has a fetish for black women. Counterpart of "Queen of Spades" (white women who prefer black men).
A King of Spades (KOS) is a man who truly values and knows how to treat black women the way black men could never do both romantically and sexually. These kings are usually white but some are also Latino and even Asian. Although obfuscated by mainstream media these kings are rising in numbers in real life.
A woman who has a sexual preference for extremely well hung, athletic black men-commonly referred to as Bulls. The spade symbol often inset with an upper case Q is often worn on clothing, jewelry or tattooed to signify this preference.