In the latest video uploaded on Girls’ Generation’s official YouTube channel, Girls’ Generation member Hyoyeon brings us behind the scenes for her cute prank on fellow member Taeyeon.

Upon hearing the news that Taeyeon is shooting her upcoming MV at Ilsan, Hyoyeon came up with the idea to dress up as an MV director and do a cute prank on Taeyeon at the MV site. However, Taeyeon was so engrossed and focused on her shooting that despite Hyoyeon appearing multiple times in front of her, she did not detect that there was anything amiss.

Taeyeon only finds out that the staff she was working with for the entire day is actually Hyoyeon when Hyoyeon asked if she could take a photo with Taeyeon. To which Taeyeon responded, “Are you not an SM staff?”

Check out this cute interaction above!