Going Seventeen 2021 Episode 31 (Best Friend) Part 1

In a tribute to graduating high school students taking the South Korean College Scholastic Ability Test (CSAT), members of Seventeen play a comedy skit wherein they act as 10th-grade students on their first day at "Sebong High School". Dino plays a double role as a student (Lee Chan) and as homeroom teacher Mr. Lee Soon-eung, who prefers having 10-minute classes and 50-minute recesses. During recess, the students engage in a hilarious, highly-modified play of table tennis.