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A Jon so stupid he would only be outshone by Wayne Rooney. Characterised by stupid actions and just general stupidity in life. Not a day passes where this Jon does not do something stupid. Very little awareness of his own stupidity until pointed out by acquaintances. Similar to Stupid John but spelt wrong.
"I've been sick everywhere"
"Stupid Jon".
by Amigos123 April 07, 2011
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