Signist 

Someone who bases their opinion on someone based on their star sign (something they cannot control)

Them: I don’t like the new kid, he’s a Scorpio guy.
Me: so your a signist? That is technically discrimination. Judging someone for something they can’t control

Signist by aminoboi18 May 31, 2021

sinister slash 

When you rip open the vagina with two hands so wide you can crawl inside.

I will sinister slash your girlfriend.

sinister slash by Superslickwillyg January 24, 2014

Sinistrous Mistress 

A sexy, left-handed woman. Also known as a sinister sister.

She's left-handed and a little bit sinister. She's a sinistrous mistress.

Sinistrous Mistress by yo-yo-ma-ma March 22, 2011

Singist 

An low grade degenerate that deserves less respect than trash.

“Evan is a singist”

“You’re a singist”

Singist by Burgundy May 16, 2019

sinister minister 

weed, ganja

yo dude i brought a baggy of sinister minister

yeah cheers

sinister minister by Superhanzz January 2, 2011

sinistrophobia 

is the fear of all things to the Left.

a-"quick! look at that ball on your left!"
b-"i cant, i have sinistrophobia!"

sinistrophobia by iheartmarie May 29, 2010

Sinister Sister 

A sexy, left-handed woman. Also known as a sinistrous misstress.

The English word sinister comes from the Latin word "sinistre", meaning "left". So, since she's sexy and left-handed, she's a sinister sister.

Sinister Sister by yo-yo-ma-ma March 22, 2011