The word is chi chi bal she was saying. It really differed a lot. It really sounds like shi bal (opps) if never listen carefully. Hey but come one, how can Koreans (no offence) be mistaken by it. Foreigners are forgiven but Koreans... It's their language afterall. There's 3 cameras over there. If she said that, she is really out of her mind.
Eunjung unnie is the leader of T-ara and she is really mindful about the reputation of the group. Take for e.g she could have let Hyo Min continued her dorky dance during SGB. However, she chose to stop it cause of her fellow T-ara members reputation. Besides, she always show the best of her not the worst side of hers. The chosen leader tends to be more meticulous about her image as well as her other members. Who would actually want to put shame into their group?! Even those artistes (not mentioning), they wanted to hide all their flaws from paparazzi/reporters. And now what?! Eunjung unnie was trying to show openly her flaws?! It totally absurdly ridiculous.
Eunjung unnie tried to speak louder in reality show.