insane in the membrane

Translations
сумасшедший в голове
He acts like he's insane in the membrane.
Он ведет себя так, как будто он сумасшедший в голове.
Definitions
A slang phrase meaning someone is acting crazy, irrational, or out of control; popularized by the 1993 song 'Insane in the Brain' by Cypress Hill.