Stands for "Shut the fuck up, neilson", which is a phrase commonly used by anyone but is directed to someone with the characteristics of neilson. See neilson.
by michael johnson2 November 28, 2006
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stfun
• STFUNBIH
• stfund
• stfundbye
• stfunevaehlol
• STFUNIDWHTS
• STFUnity
• STFUNL
• STFUNOAY
• stfuntwifym
by Doge_gorebox December 11, 2023
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by fuckjannies November 24, 2017
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