Wiktionary
on one's head
a. 1 Assumed or borne, as a responsibility or something blameworthy. 2 Assigned by government authorities as a bounty or penalty.
Usage examples of "on one's head".
The overall effect was that one was being taken to task by one's aging mother, except that in this case the party sitting in judgment could not only heap guilt on one's head but also scuttle a career with a raised eyebrow and a terse notation on one's personnel file.
I'll choose a great bush there drenched with rain, so that as soon as one's shoulder touches it, millions of drops drip on one's head.
The sun was hot outside the car, and it bore down on one's head and burned any exposed portion of skin.