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.

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

by Ski_Bum January 9, 2010

SIILF

Single Individual I’d Like to Fuck

Damn, I’d totally hop on that that 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.

by athinkingman June 2, 2010

SILF

Shirt I'd Like to Fuck

"BustedTees aint SILF..."

by An0nymous..... June 7, 2009

SILF

Sister Illd like to fuck

my sister is a SILF

by SexualityChecker July 18, 2018

SILF

Site I'd Like to Fuck

UrbanDictionary is SILF

by An0nymous..... June 7, 2009