(idiom) to skimp on one's work or perform a duty half-heartedly; to do the bare minimum just to get by without taking responsibility

To do something just enough to get off the hook or avoid a charge of neglecting one's duty; often used as a self-deprecating expression

To make excuses in order to shirk responsibility or avoid being blamed for a mistake

to do one's duty in a careless and sloppy manner just to get it over with; to work without care or effort