Sentence examples for too cool from inspiring English sources

The phrase "too cool" is correct and can be used in written English.
It is typically used to express that something or someone is extremely fashionable, impressive, or desirable. It can also be used sarcastically to mean the opposite. Example 1: "The new designer handbag is too cool for words. I have to have it!" Example 2: "Her attitude was too cool for such a serious situation." Example 3: "The temperature outside is too cool for me to go for a swim."