Today is so humid! Hopefully, most people are working in nice air-conditioned offices.
Today's phrase is " definitely not ! "
This means 100%, absolutely no!
Example 1
A. Can you finish your project by the end of today?
B. Definitely not ! We'll need at least another day or two.
Example 2
A. Would you like to eat insects?
B. Definitely not! I hate bugs!