bring down on
bring (something) down on (oneself)
1. Literally, to cause something to fall on oneself. While he attempted to water the Christmas tree, he shook its branches and brought various ornaments down on himself.
2. To cause negative consequences for oneself. You brought this down on yourself—I had no role in your failure.
bring something down onone('s head)
1. Lit. to cause something to fall onto one's head. (See also bring something crashing down (around one).) He jarred the shelves and all the books were brought down on his head. When he hit the wall of the hut, he brought down the roof on himself.
2. Fig. to cause the collapse of something or some enterprise onto oneself. Your bumbling will bring everything down on your head! Your mistakes have brought down the whole thing on your own head.