LAMK means "Let a motherfucker know." Used when a person is angered and about to tell someone off in a no-holds-barred way.
by ebonysivory March 08, 2010
Ette:Ive set up aonther WoW account dude!
Kerry:Eugh you major computer geek, stay away!!
Ette:Shut up you douchebag!You wouldnt know what a celerion was if it farted in your face!
Me:LAMK!
Kerry:Eugh you major computer geek, stay away!!
Ette:Shut up you douchebag!You wouldnt know what a celerion was if it farted in your face!
Me:LAMK!
by Queene October 02, 2007
by Jvtp/Seize January 31, 2009