The idiom "hard cheese" is used to express disbelief or shock when someone says something that you find unacceptable or offensive. It can also be used to express disappointment or frustration when someone does not fulfill your expectations.

The idiom "zip past" means to pass by someone or something quickly and without stopping, usually with a sense of disregard or indifference. The figurative meaning of the idiom is to act hastily or impulsively without considering the consequences, often leading to negative outcomes.

The idiom "blind alley" refers to a situation or path that leads nowhere or is a dead end. It can also mean a situation that appears promising at first but ultimately leads to disappointment or failure.

The idiom "southpaw" refers to someone who is left-handed or uses their left hand for most tasks. It can also be used metaphorically to describe someone who is unconventional or different from the norm, as left-handedness was once considered unusual.

The idiom "sit on the fence" means to remain neutral or indifferent, not taking any sides in a conflict or controversy. It often implies that someone is being passive or avoiding making a decision or taking action.