Netizens speculated why NCT's Mark was blurred in their 'The Next NEO Model' video.

On April 10, NCT 127 posted the above video on their official YouTube, and the members competed for the title of 'The Next NEO Model'. One of the challenges was for Mark and Taeyong to express "squishy, honey cake" with their bodies, and Taeyong chose to accentuate his cheeks. Mark, on the other hand, did a pose that had the members in the audience surprised and was shocking enough to be blurred out.

Fans commented, "What are you saying and doing Mark that editors keep blurring you out," "I can't," "He got too many secrets we don't know," and more.

What do you think Mark was doing? Check out the moment in the video above at 6:50!