silf 

a sister who is hot, basically a milf but a sister (silf)

person 1: ay! is your sister a silf?

person 2: uh ig...

silf by ursisterisasilf October 5, 2021

SILF 

a hot handsome teacher you would like to fuck.
S.I.L.F = Sir i would like to fuck

person 1 : OMG Mr.Wilson is such a SILF!

person 2 : U are soo into teachers..

SILF by hampire666 November 13, 2021

SILF 

The abbreviation of "Sister I'd like to Fuck", used when a sister of someone is very hot.

Man, Tanner's sister is such a SILF

SILF by thegreathenrylpa January 7, 2022

silf 

silf a american slang word meaning sock id like to fuck because average men usually cum in socks so sock id like to fuck.

jhon:you know silf
jimmy:your weird jhon

silf by nigger + nigger April 8, 2022

SILF 

Scientist id like to f.

Bill nye is such a SILF.

SILF by Science team April 20, 2022

SILF 

SILF - shitposter i'd like to fuck

Have you seen his stories? He's SILF

SILF by dejniel May 27, 2022

Silf 

Stepmom id like to fuck

Damn Lars stepmom is a silf
Ain’t you a girl

So?

Silf by Romaniwandastan May 27, 2023