我要娶你妈的女儿我要嫁你爸的儿子
[wŏ yào qŭ nĭ mā de nǚ ér wŏ yào jià nĭ bà de ér zi]
Humorously, literally saying 'I will marry your mom’s daughter/I will marry your dad’s son', suggesting two friends planning to become brothers-in-law. This kind of language can be considered a jest showing very close friendship, though not always appropriate.