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The act of consuming caffeine while smoking a cigarette at the same time.
Guy 1: What's he doing with all those legal addictive substances over there?
Guy 2: Johnning.
by Johnninh April 26, 2009
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When you have completed a project and go back time after time to admire your own work!
After cleaning out my pantry (which was a war zone) I couldn't resist the urge to open the doors everytime I past by and john the end result.

Tom was johnning the new deck he built every 5 minutes.
by tinymh August 13, 2009
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Holding onto a any sort of weed for an extended amount of time.
Brett: Hey Chuck! Stop johnning THAT and pass it this way.
by chuckyvorhees December 07, 2010
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