Top Definition
Shut The Fuck Up Sit The Fuck Down

Used in internet conversations to shut stupid people up and to keep them quiet while you tell them how unbelievably wrong they are
fool: OMG! I'M SO 1337 Run3sc4p3 h4x0rZ

Non fool: STFUSTFD! This is a list of reasons why you should never ever talk again...
by Emarziel September 04, 2007
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