***put two and two together. Look at the available evidence and come to a conclusion.
***his eyes wide open. Fully aware of the nature of a situation.
***get the picture. To get the meaning of something, to understand it correctly.
***rings a bell. Prompts my memory about a particular thing, although faintly or incompletely.
***brings to mind. Helps you recall something.
***I wasn't born yesterday. I am not so naive, inexperienced or easy to fool.
***come to grips with. Manage, deal with or take charge of a problem or situation.