reveng 

Short for 'Reverse Engineering'.

I am going to reveng that old program and make it useful.

reveng by dOrchymont June 7, 2018

Reveng 

it is midwest slang for pointless or stupid

this is reveng. why are we doing this?

Reveng by ManWantPizza13 June 23, 2007

Spite Monkey’s Revenge 

This is where some nasty little heale of a spite monkey usually a teenager or pre-teen has an idea for a definition for Urban Dictionary. They look it up and find your definition of ‘their’ word already in place and approved by a lot of people. True to the spite monkey mentality they immediately hit the thumbs down symbol, they then contact any like-minded losers they call friends and get them to do the same thing. They don’t bother trying to get their own definition accepted but boast about how they beat the fuck out of yours. It’s possible to hope that one day they will actually grow up, but unfortunately so many of them will remain nothing more than disagreeable little snot splatters for their entire lives.

“My latest definition on Urban Dictionary has picked up loads of dislikes, I don’t understand why.”
“It’s the spite monkey’s revenge, mate. Some little turd reckons you nicked their definition and this is a way of getting back at you.”

Spite Monkey’s Revenge by AKACroatalin June 27, 2015

revengicide 

1. A risky act of revenge, committed because the need for revenge is greater than the need for self-preservation.
2. Something you do to get back at someone, even though you know that it will be damaging to you in the end.

Marion: Our organization has an intern working at the White House!
Rob: I hope her name isn't Monica.
Marion: Not to worry, it's a guy.
Scott: Don't forget Hillary! She's probably up for a little political revengicide!

revengicide by ocius1 May 15, 2009

Drinking for revenge 

Drinking for revenge is a toast used by people known for their excessive use of alcohol. It’s the intake equivalent of whistling past a graveyard as though the rules of the tombstone don’t apply to you. The entire toast goes:

Dinking killed my mother; drinking killed my father; so I’m drinking for revenge!

Drinking for revenge is a toast used by people known for their high alcohol intake. This usually doesn’t end well!

Drinking for revenge by Mind Hunter the Profiler February 16, 2023

Captain's Revenge 

The disturbingly blue-green colored poop after eating a bowl of Cap'n Crunch's Oops! All Berries.

"Dude, I shat blue and green this morning!"

"You eat Oops! All Berries lately"

"Yeah..."

"Captain's revenge."

Captain's Revenge by A name not already being used January 28, 2012

Rewengay 

Primarily used when a friend commits a digression against you (e.g. embarrassing you in front of a potential romantic partner) or breaks omertá, rewengay is simply the act of getting revenge that is completely out of proportion.

After pulling aside bed covers to reveal meat in the shape of the word 'JUDAS'

Mark: How did you--? What does it mean?!

Jez: It means omertá. It means rewengay.

Rewengay by Jeremy Usbourne October 8, 2018