Top definition
its the acronym for " Good to know", it can be used in terms of sarcasm or actuality
Valencia: your face looks odd
by Mrz.Harper13 June 11, 2010
Happy St. Patties Day!
Good to know. An easy, quick way to say a common phrase; often over email or text messaging. Similar to FYI, BTW, etc.
"I'll be in town in 2 weeks!" "GTK! Hit me up when you're around."
by efficiencyqueen December 18, 2013
Happy St. Patties Day!
Short for "Get the Keg".

Used when someone is about to do something so stupid that you don't even want to remember.
Retard: Dude, I'm gunna light my car on fire!!
McRetard: Ahh god gtk.
by De Vil August 23, 2009
Happy St. Patties Day!
He let me know she had chlamydia via IM and I said "gtk".
by bartcatz January 04, 2005
Happy St. Patties Day!