Earlier this week, singer/actor Seo In Guk greeted fans on his YouTube channel with a new video, where he played a game of 'Ideal Type World Cup' with his own past acting roles. 

While he also tried a similar quiz with love-interest characters who starred opposite him, it was explained that the segment was cut and edited out. 

However, the very first "A vs. B" phase Seo In Guk ran into during the past love-interest world cup was so funny, that it was later shared as a YouTube short.

Seo In Guk: "Now, I will try an 'Ideal Type World Cup' with my past love-interest characters."

Phase 1: "Yoo Jin Kang of 'The Smile Has Left Your Eyes' vs. Ahn Jae Hyun of K.Will's 'Please Don't...' MV". 

Seo In Guk: "What the-"

Seo In Guk: /Disbelieving laughter/

Seo In Guk: "Did you know that I used to have a nickname? It was 'World Gay'."

Why is Seo In Guk's nickname "World Gay" again? Well, most of you can already guess but...

If you type in "월드게이" in Korean in the YouTube search bar, the very first video that shows up will be K.Will's "Please Don't..." MV, starring Seo In Guk, Ahn Jae Hyun, and Dasom. 

Many netizens were somewhat thrown off by Seo In Guk acknowledging his "secret nickname" after all these years, commenting,

"I still watch that MV from time to time kekekekeke."

"That's our WORLD GAY~"

"If you're ever bored, just look up reaction videos to this MV..."

"I seriously would not be opposed to 'Please Don't...' MV part 2. K.Will, make it happen."

"The foreigners' reaction videos to this kekekekeke."

"Even in 2023, this is one of the most dramatic K-Pop MVs ever made, so imagine what a sensation it caused back when it first came out kekekekekeke."

"It's too funny that he knows that nickname kekekekeke."

"This is a legendary K-Pop MV for real."

"This MV is so sad and Seo In Guk's acting was so perfect TT."

"It's been a while since I listened to this song~"

Here's the full YouTube short, below!