DIAGF 

Die In A Grease Fire.
ORIGIN - Clan on MTG Used Die in/to X, where X was something random. One player had Die in a grease fire.
DIAGF is used as a counter to when you wish them the ultimate death.

Jerk - "Hey way to not win the game"
USER - "DIAGF"

DIAGF by BEEFAROO March 7, 2007

diagf 

abbreviation for the phrase Die in a Giant Fire. sometimes DIAF : die in a fire

why don't you go DIAGF IRL .....

diagf by AffinityLock November 15, 2006

diagraphephobia 

The fear of deletion; the fear of being deleted. Believing that you are living inside a video game or a computer, and being afraid that you are going to get deleted from existence.

Also applies to the fear of having your important documents, photos, or other files deleted.

Joe believes he lives in some sort of 'Matrix', and constantly suffers from diagraphephobia.

Andy keeps five copies of his files in three different physical locations. He's such a diagraphephobe!

diagraphephobia by Bloopy August 27, 2009

Weiskirch Diagonal 

A line on a graph representing the amount of times a person talks about his/her abs, his/her dad, workouts, coupons, or politics compared to the total amount of talking they do. The slope of an average person is about 0.001, while the Weiskirch diagonal has a slope of around 0.83. Any person who exceeds the slope of the Weiskirch Diagonal should be put in a mental hospital and should also be forced to eat only stale bread for the rest of their lives.

Will: Man, that guy at the gym really knew his coupons.
Jim: Did he talk about them a lot?
Will: Yeah. He and his dad both crossed the Weiskirch Diagonal.
Jim: I hope they like stale bread.

Weiskirch Diagonal by the angler October 10, 2012

Diagknowsis 

A disparaging term for a diagnosis by a physician or other medical practitioner already known to the patient, but required for treatment.

I cannot believe Albi's doctor made him come in for a diagknowsis when Albi knew he just needed penicillin.
In order to have her sore foot looked at by a specialist, Abby was required to get a diagknowsis from her primary care physician.

Diagknowsis by MikeInDC July 25, 2017

diaf 

Die in a Fire

Hey asshole, diaf.

diaf by Darken Rahl August 29, 2003

San Diago Thank You 

Giving someone a kiss while they're taking a shit.

Stan: "Well I'm gonna go to the John"
Roger to his "date": "Come on! Go give him a San Diago Thank You!"

San Diago Thank You by NeophileX April 20, 2010