The idiom "on the ball" means being alert, aware, or attentive. It suggests that someone is always ready for anything, and they're in control of their actions and decisions. This phrase can also mean being organized, efficient, and professional in one's work or business dealings.

The idiom "at bay" means to be facing an opponent or enemy, ready to defend oneself or engage in battle. It can also refer to being in a position of safety or security, away from danger or harm.

The idiom "forty winks" is used to describe a short period of time, often less than 5 minutes. It is believed to have originated from the idea that if you fall asleep within forty winks (the blinks it takes to close your eyes), you'll dream about chickens.

The idiom "one stop shop" refers to a place or service where everything is available, and you don't need to go anywhere else to get what you need. It can also refer to a person who is knowledgeable about a wide range of topics or skills.

The idiom "blind date" refers to a situation where someone goes on a date or takes part in an activity without knowing anything about the person they will be meeting or what the activity will entail.