Question

"how peaceful he looks, smiling, peacock tails at the corners of his eyes"

Answer 1

Answer:

This is an attempt to downplay a scenario or situation that is chaotic. This can generally be reffered to as an understatement whereby the actual extent or degree of an occurrence is being hidden. This statement actually comes into use when there is an attempt to cover up an incident for whatsoever reason. With an horrible event being hidden being a soft smile.

Explanation:

Answer is Explanatory