Advice
Please stow your emotions securely in the overhead compartment for everyone's safety on this flight.
I am here to separate the wheat from the chaff.
Think of me as the sand grain in the oyster.
I am but a humble shepherd.
A Picture is Worth a Thousand Words.
![](https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Skull_%26_Cigarette.jpg/360px-Skull_%26_Cigarette.jpg)