Sis

1. Short for “sister”
2. A term girls who downvote posts on UrbanDictionary call each other because guys call each other “bro” and they want to try to be just like them because “eQuAlItY”

“Hey sis.”
Ew don’t call me that, we’ve known each other for like 3 days.

by TheAlwaysCorrect1 January 12, 2023

sis

used if mad at someone or you are spilling tea

“hey rebecca, i just beat you in gamepigeon.”
“SIS”

“sis i have tea ☕️”
“SIS SPILL”

by anonymous November 28, 2018

SI

Means self insert. The character you use and identify yourself to have sex with your anime waifu.

-I'm going to write a fanfiction between my SI, Jackard Bigchub Maximus, and Sagiri-chan.
+Do it elsewhere. Disgusting.

by FancyDuck December 3, 2018

Sied

An amazing person who can make you smile any day. He's sweet and he's hot and he's honest and loving. He can be romantic as hell and won't hesitate to make his girl feel like she's the only one in the world.

Person 1; damn, I wanna be like sied
Person 2; yeah, he's so cool

by Its_Alex_XOX December 3, 2018

ryan si

He has no friends and nobody really likes him

"Who's that kid in the corner?"
"Thats ryan si, he's a loner."

by vk-heroic April 18, 2018

that’s not it sis

Hunty what is u doin

Whole ass mess
Not the move

U good boo?

Wearing plaid with stripes, that’s not it sis

by Yummy hot sauce 🔥🔥 October 22, 2018

Sis

Surely in shock

After Debbi saw her boyfriend kissing Jane she was sis

by Teen advisor March 16, 2019