хоть кол на голове теши

• ХОТЬ КОЛ НА ГОЛОВЕ ТЕШИ кому substand

[хоть + VPimper; Invar; indep. or subord clause; usu. this WO]

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⇒ (s.o. is so stubborn, stupid, lazy etc that) it is utterly impossible to convince him of sth., make him understand sth., or make him do sth.:

- X-у хоть кол на голове теши{{}}≈ there's no way to beat it into X's thick head;

- there's no way to beat it into that thick head (skull) of X's;

- no matter what you say, X won't listen (no matter what you do, X won't give in etc);

- it's (talking to X is) like talking to a (brick) wall (to the wall).