The term size queen is slang for a person, usually a gay male, who prefers their sexual partner(s) to have a larger-than-average penis. A size queen may use penis size as a major or single factor in determining a suitable partner'
A person who has sexual relations exclusively with guys who have large penises.
A homosexual male or heterosexual female who is attracted to men with larger than average penises
Neal, "We really should introduce Angela to that new boy.
What do they call him, Fuschia?"
Bob, "Oh, you are soo right; after all, she is such a size queen! Such a naughty boy."