The unbeatable card[1] in Top Trumps. There's no way anyone can beat the Boeing B-52 Stratocruiser, because there is not an aircraft designer in history who would be foolish enough to try to fit nine engines on a plane - these days, four is considered profligate - and unlike with the Top Trumpssupercars edition there is no magnificent flying machine equipped with two Wankel engines to “queer the pitch”.
↑Known in poker as “the nuts”, when you know based on the cards on the table that your hand can’t be beaten, or like crying "who’s queen?" during a game of Frisbee (when you happen to be Queen).