The idiom "keep schtum" is used to tell someone to be quiet or to stop talking. It has a slightly harsh tone and is often used when the speaker wants someone to cease their chatter without being too confrontational. The literal meaning of the word "schtum" is "to shut up.

The idiom "account for" means to explain or give a reason for something that has happened. It can also mean to be responsible for something, especially financially or legally.

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 "catch napping" means to surprise someone by arriving unexpectedly while they are sleeping or resting. It can also mean to take advantage of someone who is not alert or aware. The figurative meaning is to disrupt or interrupt someone's peaceful state of mind or routine.

The idiom "all the best" is a way of saying "goodbye" or "have a nice day." It is used to wish someone well and to express appreciation for their company.