08531 Share definition Flag What you type in on a calculator to spell the word, LESBO. Stuy: "Dude, look at what u spell when you turn the numbers 08531 upside down on your calculator!"Zach: "Awesome." 08531 by w00t123 May 24, 2010 0 0 Get merch Get the 08531 mug. Buy Now — $32.95 See more merch