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(adjective) Completely, in totality. When a task or role or anything is done to the absolute best of one's ability.
Ever since Betsy and Tommy have split up Betsy has been a full-on dirty-butt whore, fucking and sucking every man that can rub two cents together. And if a lad has a little cocaine for her snout I've heard she'll throw some of that backdoor action their way. She said that she has a lot of frustrations and issues that call for her to fuck out. She can say what she will, but the fact of it is she is a slimy, dirty-butt who're through and through, and now without a man to hold her back I do believe if she puts her mind to it she could very well fuck all of mankind.
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by Nikki Stixx September 28, 2020
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Oct 27 Word of the Day
The time between Christ’s birth and the beginning of the coronavirus.
In late 2016 AD or 3 B.C.V., Donald Trump was elected as the 45th President of the United States of America.
by JDS12 March 27, 2020
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2
Adjective. A particularly intense or extreme experience, whether good or bad.
"The party got a bit full-on when those randoms turned up with all that crystal meth."

"He told me he loved me...I've only known him three weeks so it was all a bit full-on."
by Muffin Freak March 02, 2006
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3
<adverb> British Slang;

1) Synonymous with 'absolute', 'positive', 'total' etc...
"Jonathan is an absolute, full-on knob-head!"
by Stuart Fletcher November 15, 2004
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6
One of the premier trolls to ever step into the black metal internet circles, and specifically the FMP ring. Known to be absolutely crazy.
"Fullon.... come..... to.. Alberta........"
by Procyon November 29, 2006
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