SILTF 

Sister Id Like To Fuck

Look at Gregs sister, she is so fine.

SILTF by John Gray March 28, 2003

Siltchy 

An adjective for someone/something that either smells like a rotten vagina, looks like shit, and/or tastes like a soft boiled fetal duck.

Guy 1: Dude, Henry is so siltchy. It's disgusting.
Girl 2: I know right. I'd never date someone as siltchy as him.

Siltchy by swagmaster22222 December 6, 2012

SILF 

Shirt I'd Like to Fuck

"BustedTees aint SILF..."

SILF by An0nymous..... June 7, 2009

SILF 

Sister Illd like to fuck

my sister is a SILF

SILF by SexualityChecker July 18, 2018

SILF 

Site I'd Like to Fuck

UrbanDictionary is SILF

SILF by An0nymous..... June 7, 2009

silflay 

From Richard Adam's book Watership Down - it's a word that's part of the rabbit language Lapine - it means to go above ground to eat.

I didn't silflay with the rest of the warren this morning - I'll go tonight.

silflay by Captain 12 pack December 14, 2008

silf 

Sandwich I'd Like To Fuck

That sub at Quizno's is a SILF.

silf by Freakinhuge May 17, 2006