self-modifying code 

When bad programming (or a bad compiler/loader) causes a computer to 'write' data over a portion of memory that it later thinks is programming instructions in machine code, it will end up doing unpredictable things, depending on that data. By extension, any action which is likely to have unpredictable, unforseen or chaotic results.

Usually heard among techies who program in assembly language or machine code.

"I wouldn't tell your wife about your one-night stand in Tulsa if I were you; that would be self-modifying code."

self-modifying code by Meles Borealis January 11, 2009

Self-Righteous 

A self-righteous person acts superior to her peers because she believes her moral standards are perfect. This "moral smugness" is condescending by nature and is usually found offensive by others.

The typical mentality of the Western woman is that she is always right no matter what, thus driving away a lot of self-respecting guys with her self-righteous attitude.

Self-Righteous by Triggerer of Snowflakes July 22, 2019

self-incest 

Word for masturbation coined Liam Mac Sheoinin for his novel George W. Bush Buys Coke in Mid-Eternity (published by Serving House Books 2011 ). It first appears in print in 2000 when a chapter of the MacSheoinin's novel was excerpted in the Abiko Annual.

Victimized by self-incest

self-incest by Martin Masi January 20, 2013

self conceited douchebag 

failure at life, a complete moron who has no respect for anyone but himself, and thinks hes sweet shit

dj akuds is a self conceited douchebag... not to mention a failure at life and a moron

self conceited douchebag by gstar* May 7, 2011

Self Pollination 

Self pollination occurs when a male distributes poop into a cup, then turns on a fan and, while facing the fan, empties the cup's contents onto the fan, spraying chopped poop all over the man.

Ricky was feeling very bored at his house, so he decided to try self pollination to satisfy his curiosity. He was very surprised with the results, so he decided to recommend this maneuver to his friend, Cody.

Self Pollination by eeeeeaaaauuuuu April 22, 2011

self-irony 

A mockery that you direct towards yourself.

*Cunt does a backflip*
Bellend: Holy fuck I don't have the physicality to do that, ever!
Cunt: Mhm.. probably.
Bellend: I'm such a fat f-ing bastard, I'm such a loser in life.
Cunt: Stop with the self-irony.
Bellend: Yeah sorry, I'm being a selfish moron again.
Cunt: Fml.

self-irony by Bearded twat August 21, 2016

Self esteem 

Self esteem a made up term that is used to get back at someone when they do harm to their body or degrade themself

Sam - Hannah! why did you sleep with that guy ? don't you have any self esteem?

Hannah - self esteem dosn't exist

Self esteem by Emmatic June 2, 2011