Cool As A Camel

When you are absolutely freaking out. Akin to when a camel lives in a hot dry climate, being as "cool as a camel" would apply to the direct opposite of how you're feeling.

e.g. In a panic.

With the exception of nighttime, where deserts are particularly cool, sometimes below zero.

Zoe: I'm Cool as a camel right now! Mio: It's not actually a phrase you know! (As seen in Split Fiction)
Should be noted this phrase is misconstrued by the popular term "Cool as A Cucumber"