Top Definition
One who willingly engages in ass play with a partner who has not first cleaned their anus and rectum with an enema or at least a finger and a lot of soap.
"It isn't necessary to be a chunk spelunker if you've got a colon hydrotherapist in the neighborhood"
by become_the_mountain March 23, 2006

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A man with a propensity for engaging in anal sex with women of grand proportions.
Eddie got so trashed on Friday that he went all chunk spelunker on that 900lb slab of white beef. When he regained conciousness the next morning, he had to pull on the rope to find his way out. He hasn't been the same since.
by respect the teacher August 13, 2009

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Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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One who engages in anal play in the hope of getting an unexpected dividend on their probe caused by improper preparation and/or hygiene...
Max likes to dig deep in his partner's ass in the hope of coming out with a plum; he is a true chunk spelunker...
by JPnEB May 28, 2008

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt