rusty brown button Share definition Flag an asshole that hasnt been wahsed or cleaned for 7-10 years fuk kid, i was gon score this hoooot ass, when i saw she had a rusty brown button!!!! rusty brown button by sackcrusher9 October 11, 2006 0 0 Get merch Get the rusty brown button mug. Buy Now — $32.95 See more merch