It's been years since Na Young Suk PD revealed his face to the world and became known publicly as a "celebrity PD", but it looks like the PD is still showing never-before-seen sides of him to viewers for the first time, through the ongoing series, 'Earth Arcade 2'!

In fact, many netizens expressed the opinion that Na PD has been "homeroom-teacher-ified"(?) thanks to the uncontrollable, troublemaking, all-female cast of 'Earth Arcade'. 

Exhibit A: In a teaser for this coming week's episode of 'Earth Arcade', the cast members took on a K-drama titles quiz to obtain food. However, when IVE's Yujin failed to correctly answer her question, Lee Young Ji strongly critiqued, "PD-nim's pronunciation is all wrong! We can't understand what he's saying. Please use diaphragmatic breathing to articulate your words clearly!"

In response, Na PD exclaimed in an exaggerated voice, "You got it!". However, the PD then quickly went on to pronounce a problem for Oh My Girl's Mimi rather unclearly, once again setting off the cast members. Mimi asked, "What did you say?", only to have Na PD respond, "Ddaeng! I spoke using diaphragmatic breathing, so why don't you know the answer??"

Exhibit B: On a previous episode, Lee Young Ji was the unlucky cast member chosen to go on a sightseeing trip with Na PD in Helsinki. However, the trip quickly turned into a "punishment" trip for Na PD rather than Young Ji, as the young rapper badgered, "PD-nim, tell me the story of your first love." 

Later, Lee Young Ji discovered a stall selling animal hats, and proceeded to force(?) Na Young Suk PD to wear a comical reindeer hat. Young Ji and the rest of the filming crew burst into laughter while looking at Na PD's visuals in the reindeer hat; it wasn't long before Young Ji began to embarrass Na PD in front of fellow travelers in Helsinki to no end!

K-netizens commented while laugh-crying,

"He reminds me of my homeroom teacher kekekekeke. He always sighed whenever he came to class kekekekeke."

"The homeroom teacher at an all-girls' school who has to sink to the level of his students to get them to listen to anything he says kekekekeke."

"Why do I feel like I've had this experience before in my youth kekekekeke."

"The middle-aged teacher at an all girls' middle school who has to yell over all the screaming girls kekekekeke."

"The homeroom teacher who's let himself go because of the uncontrollable girls lol."

"He's totally that one teacher all the girls like to make fun of and never take seriously kekekekeke."

"These days he is totally fighting with Young Ji for real on the show lol."

"I remember he was totally clueless on season 1 kekekeke. Now he knows how to fight back against girls all too well kekekeke."

"OMG he suddenly reminds me of my teacher kekekeke."

Meanwhile, tvN's 'Earth Arcade' season 2 airs every Friday nights at 8:40 PM KST!