The definition of Lilf is used to describe people who love/obsess over Leonardo DiCaprio
"Omg, you love Leonardo DiCaprio! You're such a lilf" -person 1
"Omg, I don't !" -person 2 said in denial.
L.i.l.f
Loli, I'd like to fuck.
It's to say you're into loli instead of milf.
Guy 1: Hey, Are you into milf?
Guy 2: No bruh, I'm into lilf
Guy 1: *Calls FBI....*
FBI: FBI HOLD UP! YOU TWO ARE UNDER ARREST!
Guy 1: Wait why me?!?
An acronym used to describe a "little-kid i'd like to fuck." This refers to any person who is admittedly attractive, but is sadly younger than the person who finds them good looking. It's not used in a pervy way, but in a complimentary way. It's a way of saying that somebody is cute, and if you were younger or they were older, you guys would be a banging couple. Sadly, the age difference makes this impossible, at least until the LILF turns 18.
LILF can also be used when a person is older than 18 however. Examples of this include Demi Moore and Ashton Kutcher. You could say that he is her LILF, since he is much younger than her.
Jim : "Hey, that girl's attractive!"
Bob : "Yes, she is. She's only a freshman though and we're seniors."
Jim : "Ohh. I guess she's a LILF then."
Dan : "Hey, Sarah. I want you."
Sarah : "Thanks, Dan. I'm flattered, but you're to young for me."
Dan : "Oh no! Am I ugly?"
Sarah : "No! You're a total LILF. If I was 5 years younger, I'd be all over you."
Mother : "My son is such a LILF he gets free ice-cream from the ice-cream truck! "
(L.I.L.F.) Lamp I'd like to fuck, a moth's favorite thing to get off to.
(Moth): Oh that's a really hot LILF.
She's such a lilf, watching her read the tax code feels like foreplay.