Jason Momoa's Closest Friends Conspired for Surprise 40th Birthday Party

Jason Momoa has some really great friends who surprised him with an epic 40th birthday party!

"The Aquaman" star turns the big 4-0 on August 1 and was greeted over the weekend by close friends, including his trainer Mada Abdelhamid.

Mada, who also trained the actor for his role as Khal Drogo in "Game of Thrones", organized the surprise and filmed the actor’s genuine shock for his YouTube page.

“Right now we made up some stupid excuse for him to leave. He really doesn’t need to leave,” Mada said of Momoa’s autograph signing. “All his friends all said they’re busy, they’re not in town. He thinks it’s just the three of us going to sushi. But we’re planning the f----ng party of the f----ng year.”

Momoa was seen walking through the door and lost it when everyone shouted, "Happy Birthday!"

Later in the video, Momoa walked around greeting guests at the party, including Ian Somerhalder and his former "Game of Thrones" co-star, Emilia Clarke, who had already posted a loving message about the star.

Momoa was also gifted a cake made of whiskey and Guinness, and featured a caricature of the star engaging in one of his passions, rock climbing.

Somerhalder, 40, sent a special message to Momoa and Mada, saying, “Hello, so I just walked to this lovely man here and I said thank you, thank you for putting all of this on film.”

“Because this man, Jason Momoa’s story, is such a bright and positive story that it should be seen,” Somerhalder continued. “Momoa, I love you. Happy birthday my dear brother. Proud of you brother, thank you for everything, mahalo.”

Happy Birthday!

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