Teen Top's Niel clashed with his mom on KBS 2TV's "Mamma Mia".

Niel was featured on "Mamma Mia", a program where a celebrity child travels with his or her mom and share in various activities. Niel began the day by losing his wallet.

He then further annoyed his mom by miscalculating the various times that would take to do his planned activities. He exited in the wrong exit and walked for hours, prompting his mom to angrily say, "Why are we only walking? When are we going eat?" He continued to upset his mom by making an unplanned visit to a cathedral and taking more than 1 hour getting to the restaurant that he made an appointment for.

When Niel told his mom that they can take a lot of pictures during their unplanned the visit to the cathedral, his mom retorted, "I don't want to take pictures. You take pictures." Niel didn't respond in frustration but took the situation in stride, telling his mom, "Oh good. It's gonna take a while to get to the restaurant anyway."

Niel proved to be a surprise not only to his mom but the producers of "Mamma Mia". Previously featured celebrities Park Mi Sun and Lee Young Ja were very well prepared and had a pleasant trip this their moms, but Niel was extremely unprepared and began the trip with a conflict with his mom.