A girl who is very attractive in a slightly slutty way. A filthy girl knows it and is usually a bit haughty. Unusually good looking girls who are also bitches (in the sense of very unpleasant to be around) can be described as filthy or filth.
She's shit hot filthy.

Mmmm..... Filth.
by Your mommy's backdoor man December 14, 2010
One who is extraordinary at pool.
Oh shit, Sean that filthy mother fucker, makes an amazing come back. After being racked once by Cheng, Sean gives Cheng the dirty chink special and racks Cheng two games in a row.
-New York Times Sports Section Nov 11th,2007
by Superman6969 November 11, 2007
1. Something thats dirty

2. Frances
Omg Frances is filthy!!
by Edmanlikefood November 10, 2008
The act of getting or being extremely drunk.
Damn Toby got filthy last night.

Lucas is filthy....again.

Lets get fuckin filthy tonight dammit.

I wasn't that filthy.
by 10duece November 07, 2007
Can also be pronounced simply 'Filf' or 'Frilf' (not be be confused with Father I'd like to F**k, or Friends relative I'd like to f**k)

Definition #1
Fithly is a is a term used to describe things that considered cool by some people, usually people on the dole, or in a lower income bracket. That clearly shows they do not aren't very stylish. Some things include; cheap cars with body kits, mullets, wearing motocross jerseys in town, bad makeup and doing burnouts frequent.

Definition #2 (Often used by the lower class people described in definition #1)
Fithly means that something is good, or desirable.

Definition #3
Something that is disgusting, that you never want to come in contact with.

Using the example of two friends, Bob and Cam.
Definition #1
Bob: Look at that car coming down the street.
Cam: That car is so filthy
Bob: Ha ha, sure it.

Definition #2
Bob: Travis Pastrana's double backflip is awesome!
Cam: His Motorbike is so Filthy!

Definition #3
Bob: I just watched 2 Girls 1 Cup
Cam: How can you watch that, it is so filthy
Bob: Yeah, I get nightmares about it
by MrSafety April 05, 2010
A nasty or extremely drunk slut, or a combination of both.
I could have you but you are too filthy.

That bitch was filthy last night.

Thats a filthy ass slut.

Dude lets get some filthy sluts tonight.

by 10duece November 07, 2007
The male version of MILF

Father, I'd Like to Hump...YEAH!
That guy is totally FILTHY, to bad his wife and kids are around.
by Tybolt December 14, 2009

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