Arachnian 

(Proper) Noun,
Eight legged people said to crawl around the Earth.
Recent appearances: Canada, New Mexico, Georgia, Australia, and worst of all Hawaii
If seen please report to the Arachnian subredittit.

Person A: Did you see that thing in the forest
Person B: Yea, it looked creepy
Person C: It looked like an Arachnian

Person B: whats that?
Person C: A spider person who grows legs out of their back

Person A: This is why we don't hang out with you anymore, Fred
Person B: We didn't even invite you, go home
Person C: Alright.

Arachnian by Arachnid Protector March 6, 2021

Not here to fornicate with arachnids 

A more nuanced take on ‘not here to fuck spiders’. A classic Australianism expressing that things of little consequence or excessive moderation are not worthy to be undertaken.

Further context, similar to ‘having bigger fish to fry’.

“Hey Ellis, last drinks just got called. Pint of pale and mezcal chaser?” says Toph.
“Not here to fornicate with arachnids.” he replies in support of the offer.

Not here to fornicate with arachnids by Kiz... December 25, 2020

Arachnads 

Spidey's gonads

"My spider-sense detects tingling sensation in my arachnads" said Spidey as he looks at Mary Jane in a wet t-shirt.

Arachnads by dolop October 29, 2008

arachnid 

Fucking disgusting eight-legged abominations created by god to scare the fuck out of you by appearing out of fucking nowhere and disappearing when you get back with your chancla

"Holy fuck I just saw a spider (arachnid),"
*gets chancla*
"Fuck it's gone,"
*fucking moves out*

arachnid by snickersnigger May 16, 2018

arachnid 

Surely one of the most successful groups of animals in the history of this planet. There are arachnids on every continent (except Antarctica, obviously). Arachnids include spiders, scorpions, mites, ticks and the like. Though it is very rare for soft-bodied animals to survive, in fossil form, the oldest known fossil spider is 380 million years old, and there are even older fossil scorpions and sea scorpions known. Whenever I watch a tarantula or scorpion I can't help feeling I'm being given a viewpoint on an early age of life on this planet.

An example of an arachnid: a tarantula, a member of the oldest group of spiders which did not spin webs, merely used silk to line their burrows.

arachnid by Stormsworder November 16, 2006

Arachnigga 

Not to be mistaken with Iraq nigga. Arachnigga is the black/evil spider-man. Arachnigga played by Samuel L Jackson is the greatest movie of all time next to Robo-Bitch, and Pulp Fiction. Arachnigga and his sidekick MEGA FAGGOT take over chiraq and conquer the universe. FUCK I SPOILED IT!

Random Civilian: Its a bird its a plane

Deep voice nigga: No its arachnigga
*civilians screaming in horror*

Arachnigga by Bagsツ July 14, 2019

arachnahomaclostaphobia 

The fear of being in a small space with gay spiders

"Bob's got a bad case of arachnahomaclostaphobia. He just despises being in small spaces with gay spiders."

arachnahomaclostaphobia by Omar Ravenhurst June 1, 2005