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To go to the toilets at work for the sole purpose of playing with yourself. Often this can take up to half an hour. Usually done at busy periods leaving your work colleagues to do all the work.
Bloke 1: "Wheres the new guy gone? its getting busy!"
Bloke 2 "Hes probably Going for a Johnathon"
Bloke 1 "Sounds about right "
by Nighter May 24, 2018
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Going for a Johnathon is where you work on a night shift and skive off by going to the toilets for the sole purpose of playing with yourself
Back in a few, just Going for a Johnathon
by Nighter May 20, 2018
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