give the sack

don't give up your day job

Somewhat sarcastic but usually good-natured advice used to criticise a person's degree of talent (especially in music or other performing arts), implying that they are unlikely to be successful.

get the sack

To be dismissed from employment.

give a damn

To be concerned about, have an interest in, to care (about something).

give a fuck

To care; to give a shit.

give a good account of oneself

To act in a creditable manner.

give a hang

give a hoot; give a damn (to care about; to place value on something)

give a hoot

To care about; to place value on something.

give a light

To care.