arach-nads 

spidermans testicles

pender has a pair of hairy arach-nads that she duct-tapes to her barse

my arach-nads are tingling.

arach-nads by Ladddi tReilly August 7, 2004

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

arachnassassin 

Designated spider-killer in a home.

My wife can't stand bugs, so I am the house's arachnassassin.

arachnassassin by vbartilucci June 10, 2010

Arachnids

Bitch

"Arachnids"
"What a bitch"

Arachnids by Frick, bitch November 22, 2019

Arachnids of Level 8 

Various spiders found in Level 8 of the Backrooms.

The Arachnids of Level 8 are all venomous.

Arachnids of Level 8 by MaybeARealWord January 12, 2022

Cheeks 

An Irish phrase meaning shit, derived from ass
(Not to be confused with the literal description of one's buttocks)

"Did you hear the song Aylek$ dropped?"
"Hardly. Her music is absolute cheeks."

"My boyfriend say LaFlame is cheeks."
"Tell your boyfriend I said it's his mixtape that's cheeks."

Cheeks by thecartisan April 26, 2020