Idiosecond 

The time it takes for the light to turn green and the idiot behind you to honk.

Red light.
Green
*honk!*
Well, f*ck give me a bit longer than an idiosecond to go!

Idiosecond by Meghadeep September 2, 2016

Idiosecond 

That tiny moment you realize you have been an idiot, all hope for correction has passed, and you watch your sad fate unfold in all its glory.

As I lifted my hand to make a gesture, my hand hit the edge of my beer glass, and in that idiosecond I watched in slow motion as it spilled all over the table.

Idiosecond by InquisitiveBanana April 15, 2020

ignosecond 

1) The moment of clarity just after a boneheaded act, but just before the point of no return, when you realize you've just done something stupid.

In the brief ignosecond after the car door left Jeremy's hand, he realized he'd left his keys in the ignition.

ignosecond by edenxiii October 21, 2005