Jason Momoa hyped up "Game of Thrones" fans by hanging with the show's creators in Northern Ireland -- where they're about to roll on season 7 -- but it's not what you think.
Momoa captioned the pic with David Benioff and D.B. Weiss "ALOHA DROGO," and fans immediately speculated Khal Drogo was coming back from the dead.
The real story ... Jason just loves to party, and happened to be about an hour away from his bros. Our sources tell us he was in Dublin touring the Guinness Brewery, where they gave him his own custom "Mano Brew," 'cause ... look at the handsome bastard.
We're told Momoa's absolutely not filming NOW ... but never say never.