A Family Guy joke made by Stewie. A play on the phrase MILF. Stands for Baby I'd Like to Fuck
by Mardy M January 17, 2011
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A boss I'd like to fuck.
1. Someone epic who's way out of the league of the person using the term that they secretly fantasize about in the shower.
2. The boss / employer of the person using the term.
1.

A: But have you seen J Law?? She's such a BILF!
B: Hell yeah!

2.

A: Mr Dennis is like super hot. He's such a BILF!
B: That's gross and concerning. You are really lonely.
by GayFoyc August 21, 2016
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Baby I'd like to Fuck

Made famous by Stewie Griffin on Family Guy
Oh BILF, check out that BILF
by FG Fan January 17, 2011
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Brother I'd Like to Fuck. not your actual brother, unless you are from Alabama, but someone who is close to you like a brother, but you also think he is hot.
Danny, in a complete non threatening way, You're my favorite BILF.
by DallasDolly September 10, 2010
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Dude, check out that BILF next to the eggs.
by NICANATER July 14, 2010
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BILF is BOSS I'd Like to Fuck.
The whole point of having the acronym (like MILF) is that it's a bit taboo.
My BILF works me really hard. Yeah, baby.

Oooh, the BILF is coming! Time for me to stand by the copier and look cute....
by creaternity June 9, 2006
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Acronym: Brother I'd like to fuck.
N. Term applied to hot (usually older) brothers of best friends (bfs) or aquaintences. Used when around said targets sibling or other friends who know of siblingship.
Akin and sometimes used in place of the rarer Filf (Family I'd like to fuck; i/e:cousin, step siblings ect., aunts, uncles, cousins inlaw - of friends)
Derivitive of Milf
Note: does not denote an incestual connotation.
Jason: hey (passing to the kitchen)
Jess(studying, overtaken by jasons hotness): Your brothers a bilf.
Lynn: what?
Jess: Is he seeing anyone?
Lynn: What!?....your fucking crazy.
by A.L.F. August 29, 2006
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