Failnale 

An unsatisfying finale. Riddled with plot-holes, dei ex machina (plural of deus ex machina), and various other writing blunders. The name is a portmanteau from the words "fail" and "finale".
Normally stemming from either a premature cancellation, or writers writing their way into a corner.
What makes a finale a "failnale" is completely subjective, and is a decision up to each person to make. However, there are times when the writing is so blatantly bad, only the most hardcore of fans would defend it.

Note : While it mainly refers to television programs it is also applicable to, books, video games, comics, and basically any form of entertainment that eventually ends.

Rachel : "So during the finale there was an ancient and powerful being, who just happens to show up to give the main guy a brand new power RIGHT when he needed it."
Steven : "That was total garbage! They didn't even foreshadow something as big as that. It just showed up out of nowhere! And did you see what they did to the villain?"
Rachel : "Are you talking about the convenient and sudden mental breakdown? It was only there so the good guys could easily win. What a cop-out"
Steven : "Yeah, it was a total failnale!"

Failnale by Zombunnies January 11, 2013

Failnanegans 

When consecutive FAIL has been committed repeatedly by said FAIL offender, you finally must call FAILNANEGANS and interfere so that another FAIL can possibly be prevented.

Dude, how do you drive in the wrong lane with high beams on, while high with a drunken monkey in the back seat AND still get a ticket?! FAILNANEGANS!! *Snatches Car Keys*

Failnanegans by KyoAWare May 28, 2009

failnade 

A grenade, often in FPS games, that does not go where intended that may:

1) Bounce back and harm and/or kill you.

2) Miss the target completely.

I heaved a disgruntled sigh as I was obliterated by my failnade.

failnade by HTMLHTML January 17, 2009

failnal 

Anal sex failure or anal fail. Along with painal and ambush creampie another term coined by popular adult website Backroom Casting Couch.

Ariana attempted to have anal sex for her demo tape but despite the agent's best attempt, it turned into failnal.

failnal by Neolojizzm November 30, 2016

Failnade 

In the Counter-Strike Source Mod known as Zombie Mod, an improperly thrown grenade (or any grenade thrown by a n00b) results in failnade, which instead of hurting the zombies, propels them forward into whatever spot you are trying to defend, resulting in failure.

The BirdMan, YeaH!: Fire in the hole!

ZOMBIEMAN X--> The Birdman, YeaH!
ZOMBIEMAN X--> chucknorris101
ZOMBIEMAN X--> ewbernoob3000

chucknorris101: Nice failnade Birdman...
The BirdMan, YeaH!: =D

Failnade by The BirdMan, YeaH! August 8, 2008