loose-a-lut Share definition Flag a big nasty slut who is so loose you can take a tour bus threw there and turn it around WITHOUT ANY PROBLEMS!!! Brooke is such a loose-a-lut!! loose-a-lut by looloo and booboo January 15, 2008 0 0 Get merch Get the loose-a-lut mug. Buy Now — $32.95 See more merch