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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Exploration of bodily orifices.
James Spelunked Kenny.
Kenny likes being Spelunked by James.
by Birch September 29, 2004
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Having sexual intercourse with a girl who has a very wide and stretched out vagina. The vagina is very cave-like due to its constant past use. If you are considered to be spelunking, then the girl is a whore, and you will most likely contract a sexually transmitted disease.
We know they were spelunking with her as they all contracted the same std strain.
by Revanchie March 17, 2020
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Someone who is prone to sticking his penis in other peoples caves.
damn that rush is a spelunker
by fx August 12, 2004
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The act of engaging in sexual relations with a woman who has a large, dark and cavernous vagina. This act of extreme desperation and bravery is usually reserved for men who have gone more than three weeks without getting laid, and who are willing to submerge themselves (without safety equipment and/or flashlights) without preparation into a vagina in which many enter and few return.
Examples:

"Koumi was one of the ballsiest spelunkers I have ever seen: he used to fuck XXXXXX without a condom or a GPS system"

"Guys, we lost one of our own today. I just got word that Andrew Tha Owner" died on a spelunking trip yesterday. He was in Wunsch's Cave when he sprained his ankle, and was unable to escape. He eventually ran out of air, and died."
by Bwahaha2010 May 10, 2010
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