SIILF 

SIILF. Sister in law id like to fuck.

I have no idea why Tom married Sarah. She's such a dog. I don't get it. All three of her sisters are SIILFs.

SIILF by Mega Hemroids October 2, 2017

SIILF 

Ski Instructor I'd Like (to) Fuck

I got a private lesson from a real hot siilf today

SIILF by Ski_Bum January 9, 2010

SIILF 

Single Individual I’d Like to Fuck

Damn, I’d totally hop on that that SIILF!

SIILF by Eheh808 November 11, 2020

scilf 

Stephen Colbert I'd Like to Fuck.

When the opening credits play for The Colbert Report's new season, he grabs the American flag and jumps down amongst many Amurcan words. One of the first and only easily readable ones is SCILF.

scilf by athinkingman June 2, 2010

SILF 

Shirt I'd Like to Fuck

"BustedTees aint SILF..."

SILF by An0nymous..... June 7, 2009

SILF 

Sister Illd like to fuck

my sister is a SILF

SILF by SexualityChecker July 18, 2018

SILF 

Site I'd Like to Fuck

UrbanDictionary is SILF

SILF by An0nymous..... June 7, 2009