Rusty-penis Share definition Flag When a man inserts his penis into a womans anus. (Because when you pull it out, it is brown like rust.) You wouldn't want to suck my dick now, because i have a rusty-penis. Rusty-penis by Fack Meecough December 1, 2003 0 0 Get merch Get the Rusty-penis mug. Buy Now — $32.95 See more merch