嘟嘟小嘴耍任性摸摸头发包容你
[dū dū xiăo zuĭ shuă rèn xìng mō mō tóu fā bāo róng nĭ]
This nickname has a playful and tender meaning, possibly used in a close or romantic relationship. It describes a scene where someone pouts their lips and acts childish, while the other gently pets their hair as an act of understanding and patience.