我会穿着整齐参加你的葬礼
[wŏ huì chuān zhe zhĕng qí cān jiā nĭ de zàng lĭ]
Translating to 'I'll attend your funeral decently,' it signifies the user would be there for the most sorrowful event of losing someone, indicating a close relationship between two people but also has undertones of dark humor.