The belief in the existence of a Crab God in the after life, said afterlife contains no hell only five tiers of heaven.
Popular variants include different Crustacean idols but do not branch off main ideals, e.g Lobster God.
Sally may be a great person, but her disbelief in Crustaceanism limits her to 2nd Crab Heaven and below.
by Crab God February 26, 2019
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The act or acts of acting/sensationalizing or being a crusy crustacean.

*may also be related to cats, though, cats aren’t crustaceans*
That was a sincere act of crustaceanalism
by Keronica Kadwell October 19, 2018
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A subset of the arthropods, a large group of invertebrates. Crustaceans are characterised by having a hard exoskeleton that must be moulted as the animal grows. Crustaceans are normally divided into six subsets, the most well-known of which includes crabs, lobsters, woodlice and shrimp. This leads people to assume that crustaceans have lots of appendages ("legs"). While this is true for most crustaceans, some have very few or none.
Crayfish and brine shrimp are crustaceans. Some, like crabs, are adapted to live on land and in water.
by gerbileater August 10, 2009
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A word used by non-blacks to refer to black people when they're around. Can be equally used as nigger.
A: Can you believe those crustaceans in the back?
B: They ate all the mashed potatoes and fried chicken!! );
A: THOSE BASTARDS!
by N15 October 15, 2008
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A salty person who is known as a bottom feeder . They are usually greasy and never shower. They also always look out for themselves and not others, and make fun of their so called bros.
A:Man, this kid is such a crusty Crustacean!
B:Why is that?
C:Because he always makes fun of me, and never takes a shower.
by Jay-Lo Wizzle February 22, 2012
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1. A name for crust punk friends.

2. slang word for crust punk.
"joey is a crust punk" "joey is a crustacean"
by Anonomonomous December 28, 2009
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