引火上身玩水自溺
[yĭn huŏ shàng shēn wán shuĭ zì nì]
It's a metaphor for attracting trouble or calamities to oneself while playing recklessly with elements (such as water). One gets into trouble willingly or due to misbehavior, only to face dangerous outcomes alone, reflecting actions resulting in self-inflicted misery.