other forms: spelunking, spelunked, spelunks(v), spelunker (n)

1. v.;the exploration of natural caves
2. v.;the exploration of a man's anus by either: A. himself, B. a female sex partner., or C. male sex partner.
1. Bat researchers usually spelunk many caves to find their information.

2. while watching porn: "Eww, did you see her slip her finger into his butt? She's totally into spelunking."
by angel December 23, 2004
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The origin of all the other definitions for spelunking

noun: The act of exploring a cave
1. One popular activity to do out in the wilderness is go spelunking
by Anonymous April 26, 2004
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One who enjoys exploring cavernous regions and rustic encampments.
Joey is such a spelunker - kids fuckin up in tha caverns 24/7
by Jimmy Williams April 30, 2003
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the act of exploring for the missing condom after deep penetration
The next morning, "Oh yeah, we never found it. Better get out the head lamp so we can go spelunking."
by Miss Millie March 1, 2004
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The act of inserting ones head into the vaginal opening of a female companion.
Luis- "Damn, I heard Sally is really loose"
Anand- "Yeah, I think Mike should give her the spelunker"
by JustSomeGuy2 November 6, 2007
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If you ask people who actually go caving, spelunking is the derogatory term for stupid or unprepared cave trips. Origin: "spelunk" is the sound a clumsy caver makes when he slips and falls in a cave and lands in water.
If you don't take a helmet, more than one source of light, and a few friends into the cave with you, then you're not caving. You're spelunking.
by Sundog May 31, 2007
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1. (v) To explore virgin caverns, and or orafices. Best practiced with a helmet and possibly a light. (Unless it's scary looking, then forgo the light, but be sure to use the helmet!)
Timmy, my next-door neighbor and play-time doctor is multi talented--an accoplished physician and an experienced spelunker.
by JamiSpoon May 24, 2003
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