by Ben Carroll October 30, 2003

Eat penguin shit, you ass-spelunkers.
by alerish March 2, 2003

The act of opening and expanding the anal cavity of ones partner and then proceeding, with cave diving gear (ie: Carabiner, ropes, headlamps, etc), and entering the damp ridged caves of your consenting adult. Occasionally returning to the surface for air.
by RuffleshaveRidges January 29, 2016

this word comes from ass meaning butt and spelunker meaning someone who explores caves so ass spelunker means someone who explores the butt hole and its surrounding area
by the_one_and_only June 9, 2003

Robert is very experienced at ass-spelunking
by Bob February 11, 2003

by Omar Enrique Torres May 28, 2006
