siiaa 

Siiaa is a very attractive female often found on Gaia in rally.
She's taken so you should fuck off.

"Damn Siiaa is looking really good today."

siiaa by LKS+S August 17, 2014

Sihaam 

Sihaam is a beautiful girl, who is creative, caring, stylish, lazy, and adorable. She always cares for her friends and will always have your back. She is usually sweet and sarcastic but she can be the meanest person you have ever met if you mess with her. They are good listeners and give the best advice.

"Is that Sihaam?"
"Yeah, she looks so cute!"

Sihaam by daisy255 March 25, 2019

SiIvaGunner 

A YouTuber who only uploads high quality video game rips.

"I only upload high quality video game rips."
-SiIvaGunner's response to any and all comments questioning the grandness of his rips.

SiIvaGunner by ThunderMite42 March 14, 2017

siitari 

a person who changes his or her mind very frequently.

Damn! You keeping switching back between going to Laras and UW madison; you're a Siitari.

siitari by Boda555 June 14, 2010

SiivaGunner 

God amongst memes.

Creates rips of the highest quality

Did you listen to the newest SiivaGunner rip?

SiivaGunner by Kemikus November 26, 2016

siitari 

an individual who alternates back and forth between the two SAME two institutions of "higher" learning; note: to earn the distinction of being a true siitari one must have physically gone back and forther between these school TWO times.

also, someone who is quite gregarious (its not all bad!)

andrew.....i mean andrea siitari keeps alternating between a "school" in Iowa and a school in Wisconsan (but, hopefully the streak ends soon)

siitari by turboda September 21, 2012

SiIvaGunner Effect

For when someone you know claims to be leaving something, ie a party, or somewhere but you know right from the getgo they won't go through with it due to changing minds, general delusion or it never being intended to be happening from the beginning

Yeah man Joe said he's going to leave the party but I'm getting serious SiIvaGunner Effect vibes from him.

SiIvaGunner Effect by bigminiman12 April 16, 2017