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 - shitposter i'd like to fuck
Have you seen his stories? He's SILF
SILF(Sister I Liked To Fuck) typically can be a term used as a friend's hot sister or a girlfriend's sister
Jerry:man Victoria's older sister is a SILF man there are so many things I would do to that piece of ass. Marcus:dude I know and I'm Victoria's study partner for physics and all I do is stare at her sister the whole time.
(High school) Senior I'd Like to Fuck.
Similar in concept to MILF.