你姓潘我盼你一生你姓徐我许你一世
[nĭ xìng pān wŏ pàn nĭ yī shēng nĭ xìng xú wŏ xŭ nĭ yī shì]
Transliteration: If your surname is Pan (sounds like 'longing'), then I will desire you for life. And if your surname is Xu (sounds like 'promise'), then I promise my whole life to you. Uses homophones for dramatic declarations of eternal devotion contingent upon family names.