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25.
Sister or Sister in-law I'd like to fuck
Hey Brandt, your Sisterin-law is a SILF!
by Achilles2009 April 16, 2009
4 3
 
1.
Sandwich I'd Like To Fuck
That sub at Quizno's is a SILF.
by Freakinhuge May 08, 2006
1513 459
 
2.
Sister I would like to fuck.
much like Milf, Gilf, Dilf(dad),Dilf (dog),Dilf(donkey)Cilf(child),Bilf,Cilf(cat)or any other farm animal.
Person 1:OH MY GOD, look at that chick.What a SILF.
Person 2: Dude, thats YOUR sister. That's nasty.
Person 1: It's called SILF for a reason dude. DUUU
by ill bang ur sister! December 08, 2004
1009 322
 
3.
Site I'd Like to Fuck
UrbanDictionary is SILF
by An0nymous..... June 07, 2009
817 158
 
4.
Shirt I'd Like to Fuck
"BustedTees aint SILF..."
by An0nymous..... June 07, 2009
741 111
 
5.
sister i'd like to fuck

(same concept as milf)
that silf lives in your house?!?
by Spyder January 05, 2003
398 200
 
6.
Sheep I'd Like To Fuck

Commonly Used in Wales
Welsh Farmer: oh, thats a mighty fine sheep
Welsh Farmer b: yes it is a silf.
by ROBERT SAVAGE July 08, 2006
345 160
 
7.
Sandwich I'd Like To Fuck

A Sandwich made so perfectly one would be able to fornicate with previously mentioned sandwich.
"Oh man, that was such a good sandwich I'd basically call that a S.I.L.F."

Guy 1: "dude I just had the best S.I.L.F."
Guy 2: "What?"
Guy 1: "SANDWICH I'D LIKE TO FUCK!"
by JoJo Martinez September 29, 2006
161 61