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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
by thegreathenrylpa January 7, 2022
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SILF

Sister I'd Like To Fuck

When your best friend's sister is so hot that you actually want to date them.

If they have a hot brother it is known as a BILF.
Oh my god, did you see Jackson's sister, she's such a SILF!
by hug2002 February 8, 2019
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SILF

Scarf I'd Like to Fuck
when you see a woman wearing a pretty scarf and you like the look of the scarf so much you want to take it home, have sex with it and ejaculate into or over the scarf
"did you see that blonde woman wearing the red and white polka dot scarf ?"
"that's definitely a SILF!"
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Silf

MeansSister, Id like to fuck”
Hey Silf is that okay?
by xkloudii December 23, 2019
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SILF

Per an application (Naughty Gifts) on the facebook: a "Sheep I'd Like to Fuck"
On Brokeback Mountain, Jack's ass was not the only thing that Ennis lusted for. There were a multitude of SILFs to deflower and so Ennis brought a new "silence" to the lambs.
by theportangel June 13, 2008
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silf

My oldest son is a silf
by GlizzyGoblin November 22, 2023
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SILF

Have you seen his stories? He's SILF
by dejniel May 27, 2022
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