What are some "cool" sayings?

Question

me & my friends starting using the word cool A LOT.

& we were trying to figure out some other sayings.

we already have

to cool for school &

cool, like the other side of the pillow

what are some other ones?

Answer 1

who says cool anymore

Answer 2

I still say "cool", if the situation warrants it. How about "as cool as a cucumber" or "as cool as an iceberg"? I have heard those before. People can "lose their cool" and need to go "cool off". These seem to refer more to temper, though.

Answer 3

as cool as snowman with a top hat