Spledunking 

Repelling off the side of a large water vessel, i.e. pirate ships, fancy yachts or aircraft carriers, and "dunking" into the water below.

Johnny Depp is spledunking nicely off of the Black Pearl in Pirates of the Caribbean.

Spledunking by A Nation of One October 6, 2011

Anal Spelunking  

Anal spelunking the act of cavelike exploration in the anus of a loved one

honey i really enjoyed our adventure in Anal spelunking last night, i was enthralled by your wonderful lady caverns

Anal Spelunking by Mind Machine February 23, 2009

Facial Spelunking 

The hobby or practice of exploring the caverns of the face.

Often practiced in tandem with booger bombing.

Cube slave 1: "Dude, I'm soooo damn bored..."
Cube slave 2: "You should take up facial spelunking."
Cube slave 1: "Man, I'm so past that, I've been booger bombing you for hours..."

Facial Spelunking by liveMike June 19, 2008

urban spelunking

The act of breaking into and exploring large abandoned buildings in a city.

I got a ticket from the cops when they caught me urban spelunking in the old train station.

urban spelunking by Digby February 26, 2003

spejunking 

Looking at the crotch of a man, either in real life or in photos, in an attempt to discover evidence of the size of his junk.

I like this guy. We need to go spejunking so I can decide whether or not to hit that.

spejunking by YOITSMEYALLDOS March 4, 2010

Mancave spelunking 

The act of kickin it in your room by yourself. All men need to get away now and then, telling your friends your gonna be mancave spelunking is a way for a guy to get away with being anti-social.

Friend 1: what you gonna do now?
Friend 2: ima go mancave spelunking for a while, see where it takes me...

Mancave spelunking by Realmanfuronchest June 24, 2010

colon spelunking 

The act of anal sex.

What that girl needs is a good colon spelunking.

colon spelunking by C.S. Lewis Jr. September 4, 2004