blarneystoner 

Someone who talks a lot when stoned, in the manner of one who has kissed the Blarney Stone (giving them the gift of the gab)

that skunk turned me into a right blarneystoner, I talked bollocks all night!

blarneystoner by Captain Hotknives October 8, 2005

Blarney Stoner 

A person of Irish descent who frequently smokes marijuana.

"Dude, that Irish exchange student Riley McFinnigan O'Connor smokes more weed than anyone else at this school. He's such a Blarney Stoner."

Blarney Stoner by amazingASK April 7, 2009