a person who engages in anal sex with one who forgets to wipe after dropping a duece.
Roger decided to take part in some anal sex with Maria who ate 6 Burritos, and ran out of toilet paper in the morning. Roger sure is a shitdigger.
by Rockit December 15, 2005
somone who has no friends and keeps looking for them even if it means looking through shit.
"Hey Guys , Look at the shit digger!"
by Harry Bee January 14, 2009