make head or tail of

bang one's head against a brick wall

To waste effort on a futile project.

bash someone's head

To beat up someone violently.

big head

An inflated ego, an exaggerated belief in one's own importance.

bite someone's head off

To severely berate someone.

blow someone's head off

To shoot someone in the head.

bury one's head in the sand

To deliberately ignore the reality of a situation; to pretend a problem does not exist.

cannot make it

Cannot reach satisfactory or expected standards or do something competently; describes someone in a hopeless situation.

chase one's tail

To busily try to perform many tasks or to repeatedly revise one's plans, especially with inefficient use of one's time and limited results.