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Sinester 

A single empty-nester. An individual who is, typically, divorced or widowed who children are grown and have left the nest.
Her Match profile says that she is a sinester and has a flexible schedule.
Sinester by RareDan August 1, 2018

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

Sinestro 

Sinestro is a red head villain from the green lantern comics and series, he serves as the main villain.
Fear is the enemy of will. Will is what makes you take action; fear is what stops you, and makes you weak... makes your constructs feeble. - Sinestro ( in the live action Green Lantern movie )
Sinestro by crasher 1998 April 8, 2021

Right Handed Sinestro 

When having sex with somebody from behind, the receiving partner reaches back with their right arm and forcibly attempts to jam their fist up the ass of the giving partner. Named after Thaal Sinestro, the arch nemesis of the Green Lantern, the name is a reference to the fact Sinestro wears his power ring on his left hand so his right hand is free to penetrate people anally, as most supervillains often do with their free hands.
guy 1: I was having sex with this girl last night and I stuck it in her ass without telling her first.

guy 2: hahahaa what did she do?

guy 1: she wasn't happy so she gave me a right handed sinestro to get even.

guy 2: Oh man that sucks!

guy 1: ...I kind of liked it (._.)

sinister minister 

yo dude i brought a baggy of sinister minister

yeah cheers
sinister minister by Superhanzz January 2, 2011

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
More from Urban Dictionary

proper lad 

a lad that is such a lad that he is a proper lad
person1:did you see bob
person2: ya he was a proper lad
Word of the Day on October 29, 2026
The number of years you are still sexually active
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
sexspan by Dr Kat April 21, 2022
Word of the Day on October 28, 2026
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.
You didn't get any napkins with your takeout pork fried rice? Womp womp.
womp by 175623226 November 3, 2011
Word of the Day on October 27, 2026
When your wife’s boyfriend let you sleep past 8pm 😎😎
Wife’s boyfriend: You have 5 more minutes
Me: Poggers!
Poggers by Just_Charles April 14, 2020
Word of the Day on October 26, 2026

Oblication 

A vacation, feeling more like an obligation, that involves visiting or staying with family.
So Joe where are you taking the kids for spring break vacation? We are going on an oblication to Boca to visit my mother-in-law.
Oblication by kimmerr May 5, 2011
Word of the Day on October 25, 2026
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