(Australia, slang) With extreme vigour and enthusiasm, where quality may be considered. However, efforts involve high risk, and therefore the potential for adverse outcomes. Vision exceeds regard for due care and consideration.

(Australia, slang, vulgar) Attempting to do something with great difficulty generally with little chance of success.

(vulgar, simile) Extremely stupid.

(vulgar) Synonym of give a shit

(slang, vulgar, idiomatic) To ruin one's day.

plural of shit-eating smile

(idiomatic, vulgar) To be well-informed concerning a particular subject; to have a capable command of a particular area of expertise.

(slang, vulgar) Synonym of all mouth and trousers

(simile, vulgar, derogatory) In very close proximity; following closely.

(vulgar, colloquial) An expression of astonishment or disbelief.