SIW 

Strong independent women. Above the level of petty boy drama. Never chasing after the guy, you make them come to you. Basically, a SIW never waits around. If someone doesn't come to her, she finds another boy toy.

Well she is a SIW and found some different meat instead.

SIW by SEWYah March 7, 2011

SIW 

Self-Inflicted Wedgie.
Occurs when sitting on a couch or bed and you slide forward, but your underwear remains in the same place.

"Help! I need immediate testicular medical attention for an SIW!"

SIW by derf26 June 9, 2015

siw 

A body builder type with potential.

His cock is so huge that his women needs to be operated so his dick can get through.

- He usaully lives in near Ballerup (Denmark) but has also been seen in Hobro and Vejle (Denmark).

His tits is so big that he looks like a woman which is why he uses a BH.

Nice dick. Nice Cock

booty, cock, dick, siw

siw by siwiiii April 22, 2011

SIW 

Strong, independent warrior.

A warrior who doesn't let shit get into their head. He don't need that shit.

Source: The Youtuber jacksepticeye in his video "I Played DOOM Eternal Early And It Was AMAZING!", mark 10:21.

Alternative definition: Strong, independent woman. A fictional depiction of a mary sue fighting with or against incompetent men, usually in a film. Designed to pander to social justice warrior feminists in order to get perceived sales from that audience. Often results in huge amounts of cringe and lost sales from the actual fans of a franchise. See Ray from the Disney Star Wars movies.

SIW according to jacksepticeye : "Don't let him wiggle worm into your brain alright? You're a strong, independent warrior and you don't need that shit".

SIW by strongwarrior September 14, 2021

Aye, siwmae. 

Phrase commonly spoken when a fine trade is to be had.
Alas, not every trade is meant to be.

Aye, siwmae. I didn't expect to meet anybody here. I suppose great minds think alike, eh?

Aye, siwmae. by aknon January 26, 2014

jojo siwa 

A person that appears on Google and Youtube when you want to search for JoJo's Bizarre Adventure.

Person: *searches for JoJo's Bizarre Adventure by typing jojo*
Google: JoJo Siwa
Person: Who the fuck is this

jojo siwa by stixfix August 12, 2019

do you listen to jojo siwa 

after jojo siwa came out many gays decided to use this as an alternative to "do you listen to girl in red"

Me: Do you listen to jojo siwa? 💅
Girl: Yes omg i love women

do you listen to jojo siwa by jojosiwanumber1fan January 21, 2021