Failberg 

1. Someone who is the cause of failure. Introduced as the titanic was sunk by an iceberg.

Dude - He just threw up in my sink!

Dude 2 - failberg

Failberg by stoffberg February 19, 2009

Fibergastic 

The combined feeling of tired excitement.
Feeling of being dreamy, and excited at the time.

Can you light me a cigarette? It's dim, and I feel Fibergastic right now.

This guy is Fibergasticly high!

I want to Fibergast onto this music right now.

This song is very Fibergastic.

Fibergastic by Romeo Palmero July 18, 2010

Filbert 

Filbert the most loving person on earth good looking any body is lucky to have him as a friend or special someone. Can't be disrespected by friends or anyone.

Girl #1 hey who's that kid
Girl #2 you mean Filbert the good looking guy
Girl #1 yeah him

Filbert by helloimanonymous12344 November 23, 2021

Anal Filbert 

While in the act of mutual masturbation, shoving shelled peanuts or peanut M&Ms into the anus of your partner until he or she climaxes thus shitting out all of the peanuts or M&Ms.

Bro, I've been cleaning my house all day because I met this girl at the bar last night and she gave me the best anal filbert of my life, there was shit everywhere.

Anal Filbert by Sonny Bono December 27, 2005

fibergrass 

Slang for some of the illest weed money can buy. Any thing passed off for fibergrass should be primo shit and fuck you up good. You have neen warned, it has been known to cover up deals of... Washington Heights Haze, Ak47, White Widdow, and White Rhino etc...

Yo i need sum ill shit wat you got?
Fibergrass is tha only thing i been stocking on shelves.

fibergrass by The IceMan2000 July 16, 2008

Devil's Fiberglass 

This is where poop dries in matrix with ass hair resulting in a laminated composite that is even harder to damage than carbon fiber.

I was late for our date because I was stuck in the shower trying to get rid of a god-awful load of Devil's Fiberglass!

Devil's Fiberglass by Somebody Else December 29, 2004

fiberglasses 

When a teacher's (or anyone for that matter) glasses are so thick that it appears they're made of fiberglass.

We could barely see her eyes peering through those fiberglasses.

fiberglasses by J.Robbins January 23, 2007