Top definition
To preform below usual standard in a everyday task or activity
"Howd you go today in your game"? "Not great i came last, i had a johncha".

How's university going simon? "Not too good, failed a few subjects ". "I have been having a johncha this semester".

"He has been preforming terribly this month". "yeah i know he is having a johncha"
by Samus the TBK July 27, 2017
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