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The sole purpose of which is to let a person, most often a child, know when they are REALLY in trouble. When you are called this, you better be prepared for all hell to break loose.
John William Smith, you get your butt down here this instant!

Lily Ann Williams, what do you think you are doing young lady?

Person A: I gotta go, my Mum just used my full name
Person B: Ouch, hope you aren't grounded for long.
by Mystic_Snowfang June 17, 2008
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Jun 24 Word of the Day
An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.
Sarah: 'OMG Susan, I can't believe you are wearing the same skirt as yesterday. Oh, and by the way, EVERYONE knows what you did with Kevin on the weekend. Plus you look a little fat, are you retaining water?'

by Billy Chickenhole September 15, 2007
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When your parents say your full name you know your screwed
Jonathan Matthew Erik come Down here right now this is when Jon realized he is screwed and said you know your screwed if your parents say your full name
by Jake Paul is taken May 08, 2018
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Someone’s first and last (and sometimes middle) names. Hence “full” name.
I shouldn’t give an example for what a full name is because that might be someone’s name and I don’t want this breaking Urban Dictionary rule
by nlolhere July 03, 2020
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