Keystie is a slang term for the college drink of choice aka Keystone Light. A 30 pack of Keystone Light is also know as the "dirty thirty." Keysties provide help during awkward silences and break the tension. The Keystone Ice brand is the strongest form of this product
"Hey you suss pass me some Keysties."
"Dude, I got trashed from a dirty thirty of Keysties last night."
"Dude, I got trashed from a dirty thirty of Keysties last night."
by Benji January 20, 2005
moronic slang term for a Keystone beer. Used only by complete and utter tool bags who also use the term "dirty thirty."
by aSmarterPerson February 24, 2006