Kim Jong Kook, best known for SBS' 'Running Man', celebrated his 39th birthday by taking his fans out on a movie date.�

SEE ALSO: Taeyeon joins cast of 'Zombie Bus 2': Netflix series set for thrilling season

On April 25, Kim Jong Kook took out 200 lucky members of his official fan club to a surprise event. The singer rented an entire theater for his fans and him to enjoy watching 'The Avengers: Age of Ultron', and not only that, they were also treated to popcorn, drinks, and special rice cakes.

Though he intended to thank his fans for all the love they've given him, they also had a surprise for him, bringing out a cake and singing him the happy birthday song.�

Kim Jong Kook also posted on his personal SNS, "Thank you to [my fans]! I was so thankful to all the members and staff! It was the best food cart so far," along with a photo with his 'Running Man' members above.

Happy belated birthday to Kim Jong Kook!