The lyrics to By2's song "我想要" (translated as "I Want") introduce different characters with their respective ages and wishes. The song starts with Xiao Meng, who is 14 years old and wishes to improve her grades. She represents the dreams and aspirations of many teenagers who strive for academic success.

The next character is Fan Fan, who is 16 years old and expresses her desire to have a pet dog. This showcases the innocence and companionship that animals can bring to a person's life.

Huan Huan, the following character, is 15 years old and hopes to become wealthy. Her wish reflects the universal ambition of attaining financial stability and abundance.

Lan Yan, at 17 years old, dreams of being a socialite who never gets fat. This wish encapsulates the desire to be both glamorous and maintaining a perfect figure, highlighting society's obsession with appearance.

Next is Yuan Yuan, who is 20 years old and longs for a boyfriend. Her wish represents the longing for love and companionship at that age, indicating the common desire for emotional fulfillment.

Lastly, Xiang Ying, who is only 6 years old, wishes for her "carrot legs" to disappear. This portrays the innocence of a child who may have insecurities but wishes for physical changes to feel more comfortable.

Overall, the song "我想要" presents a collection of relatable desires and dreams across different age groups, illustrating the various ambitions and yearnings people have throughout their lives.