The FDL is an extention of the DL or down low, the fdl meaning f*cking Down low. Usually used to express that the fact just disclosed should never be shared
jim: Ohh your gonna propose to Mary tomarrow? Ok ill keep it on the DL.

joe: no Jim, you better keep it on the FDL.
by <blank><blank> January 9, 2009
Get the FDL mug.
Stands for Fashionably Dressed Lesbian. A lesbian with the fashion sense of a gay male.
Michelle: Did you see Sandy’s cardigan today?! It’s fabulous! Very modern.

Nicole: Well she *is* an FDL, I’d expect no less from her.
by NicoleLF October 10, 2008
Get the FDL mug.
Fibre Defense League

Praise the beanman
Are you part of the FDL? Why, yes i am
by Zypher. July 6, 2019
Get the FDL mug.
Oh my God! she looks like a seal, she loves sex! fattie loves to suck dicks!
She's a FDL!!!!!!
by VelvetDancer October 27, 2009
Get the FDL mug.
Baylee: Did you see Mandy today at school? FDL much?

Mark: She doesn't need to wear a mini skirt. Ever.
by CoconutMuffin May 21, 2011
Get the FDL mug.
That guy is such a douche! He stole my girl!
Mannn he's an FDL!
by MMFS11 January 18, 2011
Get the FDL mug.
The FDLS made news for allegedly marrying off 13 and 14 year old girls to older men.
by calicat2210 April 15, 2009
Get the FDLS mug.