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A mythical cosmic creature created by H.P.Lovecraft. source of much debate and followed by many cults. He is acient going back to the beginning of time. He I the destroyer of life and sleeps in R'lyeh his city of nightmares and dread. With his kin there the control through our dreams waiting for the day the will be awoken again and dominant the world.
The dark Lord cthuhlu has awoken and perpares to lead his hordes on the universe.
Cthuhlu by Mgiggity May 2, 2016
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cthulhu fhtagn 

Shortened prayer of worshippers of Cthulhu Cult. In full "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn" - "In his house at R'lyeh, dead Cthulhu waits dreaming."

Cthulhu is fictional evil deity from stories of H.P. Lovecraft, first appearing in Call of Cthulhu from 1928.
no example of usin cthulhu fhtagn in normal conversation unless you´re a worshipper of Cthulhu.
cthulhu fhtagn by stripping_welsh January 8, 2012
A squid-beast from H.P. Lovecrafts creation; My true father and savior
All praise Cthulhu, a beast of darkness
Cthulhu by bluuskkye77 September 25, 2018

Cthulhu Mythos 

The story mythos created by H.P. Lovecraft, and continued by his friends and piers after his death in 1937. This particular mythos is named after one of the gods created by Lovecraf, Cthulhu. Many items and gods have been featured in many modern day stories and video-games. It was even the basis for an R.P.G., The Call of Cthulhu
H.P. Lovecraft created the Cthulhu Mythos
Cthulhu Mythos by Zhayde Foxxe September 6, 2003

Cthuluism 

A religion that worships our one true god, Cthulu.
Billy: I believe in Christianity!
Joe: I believe in Cthuluism!
Cthuluism by lordtortoise November 13, 2017

call of cthulhu 

One of H.P Lovecraft's best known short stories. It was instrumental in forming what is now known as the Cthulhu Mythos. It is also the only story written by Lovecraft where Cthulhu makes an appearance.

Call of Cthulhu, is also the title of a popular pen-and-paper roleplaying game based on the Cthulhu Mythos that is published by Chaosium Inc.
"Have you read the short story Call of Cthulhu?"

"Last nights Call of Cthulhu gaming session was exciting, too bad you missed it."
call of cthulhu by DavionShores September 25, 2005
A character in Lovecraft's tale "The Call of Cthulhu". Cthulhu is a monstrous entity who lies "dead but dreaming" in the city of R'lyeh, a place of non-Euclidean madness presently (and mercifully) sunken below the depths of the Pacific Ocean. Cthulhu appears in various monstrous and demonic forms in early myths of the human race. Racial memory preserves Him as humanity's most basic nightmare. Cthulhu is the high priest of the Great Old Ones, unnatural alien beings who ruled the Earth before humanity formed, worshipped as gods by some misguided people. It is said that They will return, causing worldwide insanity and mindless violence before finally displacing humanity forever.
"That bitch had some Cthulhu eyes."
Cthulhu by ephidryn December 2, 2003
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Brent: he just tossed me a slop grenade
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