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B1A4 recently made a comeback with their new song "A Lie", and Joo Young, who was in the same extracurricular band with CNU during their high school days, took it upon himself to promote B1A4's comeback on his Instagram! He wrote, "I heard B1A4 came out with a new song, it's 'A Lie'~". But instead of writing "b-one-a-four" in Korean, Joo Young made a mistake by spelling "b-wan-a-four"! 

CNU commented under Joo Young post at first with, "Joo Young-ah, good job", but then followed up with "Joo Young-ah why did you write 'b-wan-a-four' you sound like an ahjusshi." 

It doesn't end there, as fans noticed that Lee Si Un, who also made a supportive post on his Instagram for B1A4's comeback, wrote, "'B-wan-a-four's new song came out. It'll be daebak even if I don't support it, but for kind CNU, Baro, whom I've met once, and the unexpectedly talented Jinyoung, let it be even more daebak! Fighting!"

Fans laughed seeing how even though Lee Si Un used the same mis-spelling as Joo Young (whether accidentally or completely on purpose is unclear), CNU did not rebuke Lee Si Un, who is a hyung, and simply wrote, "Thanks hyung!"

Are you BANAs okay with your bias group now becoming "B-wan-a-four"?