Sirfuck 

When the fuck is so sir it becomes a sirfuck. It is a word that typically faggot like to use.

Come on sir, like what the sirfuck.

Sirfuck by The most Epic gamer October 26, 2018

surfuckingprise

A sarcastic reference to a surprise that is not really such a surprise.

Well surfuckingprise, she’s late again!

surfuckingprise by Dr Bunnygirl July 27, 2019

sitfuck

having sex while sitting down

Did you see that shit they were sitfucking while I was eating my sandwhich.

sitfuck by Matt June 17, 2006

Sisfuck 

The sordid act of sodomising one's own sister.

Mendes likes a sisfuck every now and again.

Sisfuck by Roger Jackson March 22, 2003

shirfuck 

The typo to shitfuck

You're a real shirfuck... Oops I mean shitfuck!

shirfuck by Cammy Down March 11, 2015

sifuck

use this word with caution where people think your actually saying it/ the meaning is when you your about to say son of a bitch but also say fuck you so you say sifuck you your welcome

you sifuck-er that was my cookies you asshole you son of a sifuck you die in a fire you cunt and to that bitch you married

sifuck by available_available..sup human September 15, 2020

Sirifucker 

A person who wants to screw Siri, a virtual personal assistant made by Apple.

Sirifucker: Hey Siri, I want to screw you
Siri: I won't respond to that
Person B: Eww you Sirifucker

Sirifucker by CiP12 January 12, 2021