Noisy-boy Share definition Flag A single, loud shit taken in a public restroom. Often common in men's restrooms, and eschewed in women's. i.e. I took a wicked noisy-boy in the restroom, but I wasn't the only one. Noisy-boy by Wurd_Smith_getting_jiggywithit January 25, 2016 0 0 Get merch Get the Noisy-boy mug. Buy Now — $32.95 See more merch