The idiom "from time to time" means occasionally or irregularly, without a fixed schedule. It is used to describe something that happens infrequently or intermittently.

The idiom "quote, unquote" is a verbal indicator used to show that the words that follow are not meant to be taken literally but are being used figuratively.

The idiom "fly on the wall" is used to describe someone who silently observes or witnesses events happening around them without being involved.

The idiom "mad at" is used to describe extreme anger or fury towards someone or something. It can also be used to describe a state of being angry, irritated, or upset.

The idiom "above board" means to be open, honest, and transparent in all dealings. It suggests that someone is trustworthy and ethical, and that they have nothing to hide from others.