On the December 2 installment of KBS 2TV's 'Unnies Slam Dunk,' Jessi and the other members challenged themselves to record Christmas carol songs under the direction of Sung Si Kyung.
Everyone recorded their portion of the song pretty smoothly until the unexpected difficulty arose! Jessi came into the recording studio with so much swag and could not finish her part quickly.
Jessi's English lyric parts presented no problem, but when it was time for her to record some tricky-to-pronounce Korean lines, Jessi made mistakes repeatedly, making everyone laugh. The line that read, "Pull the sled," turned into "Boil the sled" because of Jessi's terrible Korean pronunciation!