Fatal Blow 

A fatal blow is like a MKX X-Ray, just way way worse. It is used for combat (kombat) in MK11. All characters have one.

(In game party0
Player1: "Haha your health is low"
Player2: "Well how about I use my Fatal Blow"
Player1: "Well shit"

Fatal Blow by NetrxBox August 7, 2019

fatal Blow 

Fellatio in which the female promptly removes the penis by way of oral clamping. fatal Blow, commonly abbreviated as fB.

SVU found cause of death to be a fatal Blow. He bled out of the scrotum and what remained of the penis.

fatal Blow by SVUfangirl2012 December 15, 2012

Fatal blowback

When the firebox door of a steam locomotive is opened in a tunnel, with the blower on. The action of opening the firebox creates negative pressure in the cab, thus forcing the contents of the firebox into the cab (coal, fire, etc) usually resulting in the deaths of the crew.

Guy 1: did you here how John and Michael died?
Guy 2: no, how?
Guy 1: Fatal Blowback....

Fatal blowback by ShitDemon01 December 30, 2020