A 'dirty hurty' is when a person applies faecal matter to a coarse piece of sandpaper (preferably 60 grit) and then goes on to use it as a masturbatory device. the rest is up to the imagination.
by DirtyHurty69 May 13, 2016
The elegant act of using sandpaper to wipe your ass, then proceeding to wrap the shit-covered sandpaper around your dick and using it as a condom.
by wellington_the_skellington April 24, 2016