衬衫少年我嫁你长发少女我娶你
[chèn shān shăo nián wŏ jià nĭ zhăng fā shăo nǚ wŏ qŭ nĭ]
It's a poetic phrase, saying that if you're a young lad wearing shirt, then I would want to marry you. Conversely if you're long hair young lady then I would wish to take responsibility to marry you. Reflects different types of crush or adoration towards two kinds of figures of the opposite sex.