Singer IU made a thoughtless remark.

In recent recording of MBC's "Strongest, Fastest Quiz Show Q," IU said "My stomach fat can be grabbed", buying much attention.

IU is normally known as a 'disabled body' because her body is so thin. But she was put on the spot to reveal her weight on this day because of her trainer Sean Lee.

Sean Lee said, "I could guess the exact weight of a person just by looking at them." Then, MC Son Bum Soo asked him to guess IU's weight.

Sean Lee said, "I think she's around 43kg. Even if she weighs a lot, she won't be over 45kg." But IU said, "I weigh more than that. To be exact, I'm 46kg", showing honesty.

IU said, "I have a lot of fat in hidden places. If you don't believe me, I can show you", shocking Sean Lee.