tick something off on your fingers
tick (something) off on (one's) fingers
To enumerate or count down a list of things by touching one's fingers in succession as one states the items aloud. It's important to use body language when presenting information to people. If you have a list of topics or ideas, tick them off on your fingers; the image of it will help people remember them.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
ˌtick something off on your ˈfingerscheck a list of things by saying them aloud, and touching your fingers one after another at the same time
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