Dun goofed 

Failing incredibly at something like a task; or what you hear after you 'bout to be kicked in yo' behind

Son: *Watching
Father: *Breaks in* *gasp* SON, U DUN GOOFED
Son: *Gets a big spanking*

Dun goofed by Jenndar-Da-Man June 7, 2017

Dun Goofed 

When a person fails at something or outright does something dumb and regrets it.

I crashed my car! I dun goofed.
You dun goofed.

Dun Goofed by hman1223 May 29, 2018

Dun' goofed 

What happens when a preteen girl uses the internet.

Jessi Slaughter dun' goofed again?

Dun' goofed by yomommascouchagain January 12, 2011

dun-goofed 

so, when you dun goof, you screw up in a REALLY BAD way, like getting caught with your gf/bf under the stairwell, or blowing up a gas can thinking it was empty

you just dun-goofed REAL bad timmy!

dun-goofed by ConorMackGeGoryator November 23, 2018

you dun goofed 

When you have committed an act in which "consequences will never be the same again"

You dun goofed!

you dun goofed by Don Goof July 16, 2010

ya dun goofed 

A way to signify someone screwing up, or failing miserably.

Made famous by the 11 year old Youtube trainwreck "Jessi Slaughter" aka "kerligirl13" and her Father.

Your daughter is posting nudes on the internet.... ya dun goofed.

All ya haters aint got nothin on me, ya dun goofed, I'ma make a brain slushie.

ya dun goofed by Poor Child July 15, 2010

YOU DUN GOOFED 

When you've dun something thats just plain stupid.

That Guuuuuuurl: oh WOOPSIES.. I just spilt water all over your desk....my baad...
Me: YOU DUN GOOFED!! CONSEQUENCES...WILL NEVER.BE.THE.SAAME!! O____e

YOU DUN GOOFED by BabyTanTaniaBobania April 22, 2011