长发及腰那是你太矮
[zhăng fā jí yāo nèi shì nĭ tài ăi]
This username is a playful and somewhat teasing phrase. It literally translates to 'Long hair reaching the waist, but it's because you're too short.' This suggests that the user may have long hair and shorter stature, but in a self-deprecating or lighthearted manner.