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 01, 2017

SIILF

Ski Instructor I'd Like (to) Fuck

I got a private lesson from a real hot siilf today

by Ski_Bum January 09, 2010

SIILF

Single Individual I’d Like to Fuck

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

by Eheh808 November 11, 2020