When Bong Bong was little, her arms and legs were very soft, like noodles. Because of that, she will often fall down, even if she just stumbled a little. Grandpa used to joke, "If you're this flexible, you should join the circus. You can perform a flexible act, sticking your head through your legs." Being soft and weak, Bong Bong was also mischievous. Sometimes she will climb on chairs, other times on the bed, then jump around and fall... One time, she used the horizontal door of the washing machine as a swing, sitting on it and swinging back and forth. While she was enjoying herself, suddenly... crash! The hinge of the washing machine door broke, and Bong Bong was thrown to the ground. She was scared and ran into the bedroom to hide. Grandpa had to call a repairman to fix it. After adjusting, he said: "Bong Bong, the mechanic has finished repairing the machine. You can sit on this door again if you want!"!" But Bong Bong didn't say anything and ran off to the balcony. Bi Bi had only heard stories about Bong Bong's mischief but hadn't seen it for herself. Today, when they visited Aunt Nga's house, Bi Bi finally got to play with Bong Bong. While the adults chatted downstairs, the children played together in the spacious room on the second floor. Bong Bong brought out a rubber deer for Bi Bi to play with. The deer was orange, made of rubber, and fully inflated, so it bounced like a ball. They kept making the deer bounce continuously and laughed happily. After a while, Bong Bong said, "Let me show you a deer trick!" Bi Bi didn't know what a deer trick was, so she agreed and sat in a corner to watch Bong Bong's performance. Tran Tran, being calm and quiet , also sat in a corner without saying anything. Bong Bong said:• Let me put the deer on the bed and make it jump high, jumping out of this window for you to see!• Oh, sis, please do it inside the house! Just as Bi Bi finished speaking, Bong Bong carried the deer onto the bed. In a swift motion, Bong Bong jumped onto the deer's back. It seemed like the deer didn't like being ridden, so it thrashed around, twisting and turning. Bong Bong tightly grabbed onto the deer's antlers. The deer couldn't thrash anymore. Bong Bong laughed loudly, feeling triumphant. She said:• Watch this, I'm going to start jumping! Bounce... Bounce... Bounce... The deer bounced on the bed. Bong Bong was excited about the deer's back. Full of enthusiasm, Bong Bong shouted, "Jump!" and forcefully kicked her legs off the bed, while still holding onto the deer's antlers. Whoosh! Bong Bong and the deer fell to the ground. Mischievous but scared, Bong Bong burst into tears. Bi Bi quickly ran to support her. Tran Tran walked slowly towards them - she was always a little slower. Hearing the crying, Aunt Nga hurriedly ran downstairs. She picked up Bong Bong and shouted, "Oh no, your arm is broken!" Bong Bong's left arm was fractured and bent at an odd angle. The whole family panicked and tried to find a way to help her. They needed to take her to the hospital immediately. The children's playtime ended there. Bi Bi was quite shocked. She had never been reckless, but Grandma always reminded her not to imitate Bong Bong's mischief, as being too mischievous would lead to trouble. Just like Bong Bong now, with her arm in a cast, looking like a wounded soldier. Bi Bi obediently said, "Yes, ma'am!"After some time, Bong Bong's cast was removed. Children's bones heal quickly. Her arm had recovered, but it seemed a bit crooked. At that moment, the sisters compared their arms. Tran Tran's arm was straight. Bi Bi's arm was also straight. Only Bong Bong's arm was slightly curved. Well, from that day on, they gave Bong Bong the nickname "Curly Arm!" Since then, Bong Bong Curly Arm became less mischievous.After fixing it, he said: Bong Bong, the washing machine repairman has finished repairing the washing machine. You can sit on this door again if you want!"