One past episode of KBS Cool FM's radio show 'Volume Up', IU shared a hilarious story.
During the talk, IU told actress Yoo In Na, "I went to get my health checked up at a hospital the other day. You'll love to hear what happened there."

She continued, "The medical staff got things ready, then one of the nurses told me, 'We are going to put you into a deep sleep now.'"
She went on, "A few seconds had passed, but I was still awake! It really did not work on me. I got worried and said, 'I'm not asleep.'"

After calming herself down, IU said, "And do you know what the nurse told me? She said, 'It's finished. You are done.' I was like, 'What?!'"
Yoo In Na also burst out laughing and IU added while still laughing, "So, it turned out anesthesia worked perfectly on me."
(Credit= KBS Cool FM Volume Up, 'dlwlrma' Instagram)
(SBS Star)