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Noun, female) a disgusting woman that is encountered in dive bars who is semi to moderately attractive, but is married with children and still goes home with you. Usually these species have a gin-soaked, chain smoker voice, and have names like Rhonda,for example, which they shorten to "Ronnie" etc. They leave their husband and kids in the hotel room on vacation, and go out on the town solo, having sex with other partners in bathrooms, on piers by the beach, or in public parks after hours of daylight. After these encounters, they cling to their new sexual partner like a barnacle clings to the hull of a boat, and the only way to remove barnacles is with extreme effort using a plastic putty knife. They are very hard to get rid of.

(noun male) a shit- bag. An under performer, or complete degenerate. A failure in all aspects of life.
I thought I would never get rid of that mollusk from last night!
Mollusk by Scoopalone June 1, 2014
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Boneless animals that could demolish the world if they had hands like Octopus, Squid, Cuttlefish, Snail, or Clam.
Used also to describe a physically weak person that is very rational and smart.
Many mollusks have tentacles.
This guy is such a mollusk.
Mollusk by Mollusk Clam Cuttleman February 17, 2021
A sand-dwelling creature, that according to Ween emulates the ocean sound, speaks of the trinity, and casts a light at the sand with its wandering eye.
There are three things that separate the mollusk from the sand: the waking of all creatures that live on the land, and with just one faint glance back into the sea, the mollusk lingers with its wandering eye.
mollusk by Runaway Jim June 12, 2005
Dylan John: You mollusk!!
Mollusk by grandmaster lethal December 9, 2004
A sweet word for a slimy, stinky, smelly, snail.
Amelia----> Mollusk
Mollusk by Patty MC December 31, 2008
A scabby crusty growth on the scalp that can be picked off.
I just picked mollusks from my head.
Mollusk by Hessy80 May 11, 2018
A business magnate and investor. He is the founder, CEO, and Chief Engineer at SpaceX; angel investor, CEO, and Product Architect of Tesla, Inc.; founder of The Boring Company; and co-founder of Neuralink and OpenAI.
Let’s see if mollusk has a pair…Come see me face to face…I’ll show him things he’s never seen before… Like, the other side of his dick when I slice it off.
Mollusk by Captain J. S. May 27, 2022