Girls' Generation's Hyoyeon has uploaded a clip of herself surprising and pranking Taeyeon on the set of her newly released music video, 'What Do I Call You.'

On December 26, Saturday, Girls Generation's Hyoyeon has uploaded a behind-the-scenes clip from Taeyeon's filming set of her latest track, 'What Do I Call You.' Hyoyeon surprised Taeyeon by the prank and pretending she's one of the staff members working on her production.

Hyoyeon fully disguised herself by wearing a cap and black clothing matching other staff's outfit to avoid being easily recognized by Taeyeon. Moreover, Hyoyeon is fully determined to prank Taeyeon by also practicing changing her voice tone so no one, even the other staff, will recognize her completely.

Finally, Hyeoyeon arrived on the set and was introduced to Taeyeon to be tasked to do the filming for the behind-the-scene interview the same day. Hyoyeon was given a name as 'Kim Hyoeun,' and luckily enough for her, she could push through the interview without getting busted by her co-member Taeyeon.

At the end of the video, Hyoyeon is ready to reveal herself as she enters the room where Taeyeon is and asks for her autograph, which Taeyeon happily granted and a photo together. Moreover, Taeyeon started to doubt her identity and asked if Hyoyeon was an SM employee and took her facemask off.

Surprised by her disguise, Taeyeon was completely pranked by Hyoyeon and asked her when did she arrive. Fans who have already watched the clip expressed how hilarious the whole idea was as Taeyeon failed to recognize her co-member Hyoyeon.

Netizens admire both the K-pop idols as, despite the hectic schedules they have on their career, they would still find a way to make time with each other.

Watch the whole adorable prank by Hyoyeon below:

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