9/11/14/15 year old "Jessi Toxic Slaughter" posted a youtube video entitled "Muh Emotional BreakDown Over All Of You Guys Shit!" on July 15, 2010 under the account "Kerligirl13" whining about /b/ harassing her by sending pizzas to her house after posting several videos where she claimed to be "prettier than u even without makeup!!!!111!!" and telling "haterzz" that she is going to "pop a glock in your mouth and make a brain slushie". Mustache/Ankle sock man (aka Papa Bear) made a cameo appearance in the video and stated that "you dun goofed". Tumblr and worldwide internet memes ensued. See also: "Consequences will never be the same".
Mustache/Ankle sock man: "YOU DUN GOOFED! consequences will never be the same!!11!!"
by TumblrTard July 16, 2010
3 Words related to you dun goofed
When you have committed an act in which "consequences will never be the same again"
You dun goofed!
by Don Goof July 15, 2010
A new and popular term meaning consequences will never be the same.

you can call the cyber police if this happens.
Child: DADDY!!!!11!! SOMEONE'S BULLYING ME ON THE INTERNET

Dad: -towards the internet- YOU DUN GOOFED IMA GET THE CYYYBBER POLICE AND THE GOVERMENT ON YOUR ASSES.
by Shihmale July 17, 2010
an exclamation of complete rage over ones comments on a internet video.
Your threats towards my daughter are gunna be blahblah blah billymays rapist.....
you dun goofed
by ANON@/b/ July 16, 2010
When you troll somebody really hard!!!
and consequences will never be the same
guy 1: so i herd you leik mudkipz

guy 2: no

guy 1: so i herd you leik mudkipz

guy 2: shutup

guy1:so i herd you leik mudkipz allllot!!!

guy2: rages and makes a video of him having an emotional breackdown and upload on youtube

guy 2's father: you dun goofed
by VoltronLadiesMan August 13, 2010
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
by BabyTanTaniaBobania April 04, 2011

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