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Acronym for "Kindly Shut The Fuck Up!". Implore a person to keep quiet immediately. Can be used to mean "please stfu" to lessen the blow or cushion it for friends. :)
Hey dude, kstfu! I am trying to read here!
by gansvv January 06, 2010
5 0

Words related to kstfu:

close mouth ksftu shut up stfu stop speaking