nonsense box Share definition Flag (Noun) - a person, most likely a female, who doesn't know what they are talking about or generally talks a lot of shit. Woman: "Whoop whoop drinks with my besties tonight!"Me: "SHUT THE FUCK UP YOU NONSENSE BOX" nonsense box by RascalHewlettII January 13, 2014 0 0 Get merch Get the nonsense box mug. Buy Now — $32.95 See more merch