Question

Cool as a Cucumber very calm; not nervous or emotional

Accepted Answer

Roslyn was as cool as a cucumber when she got the award from the President of the United States. As early as the 1500s this expression was used to describe calm and composed people. When thermometers were invented, scientists showed that cucumbers are often 20 degrees cooler inside than the outside air.

Idiom	Cool as a Cucumber
Example	Roslyn was as cool as a cucumber when she got the award from the President of the United States.
Meaning	very calm; not nervous or emotional
Origin	As early as the 1500s this expression was used to describe calm and composed people. When thermometers were invented, scientists showed that cucumbers are often 20 degrees cooler inside than the outside air.

Cool Cucumber Roslyn Award President United States Calm