You don't need to pull the ears that much. Ha BTOB Peniel & Changsub's gif is a hot issue.

The gif of BTOB member Peniel & Changsub Lee in a fan sign meeting
was posted on a Korean online community and drew netizens' attention.

Netizens who saw the picture of Peniel erasing the magic stained on the back of Changsub's ears had reactions like,
'Why is magic stained on the back of ears. Ha,' 'Peniel was good at finding that. Ha,'
'They are like a mother and child. Ha,' and 'Isn't he pulling Changsub's ears too much! It might rip off. Ha."

▲Image Source: Online Community