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The rest of the members pulled a prank on the birthday boys by making them play charades as well as surprising them with a birthday cake and seaweed soup. In their celebratory mood, they also sang and danced along to 2PM's "GO CRAZY!" in the car on the way to their fan meeting.

The fun didn't stop there as JB and Mark also showed their aegyo, while Youngjae surprised his members by doing the dougie dance.

Check out the season finale above!