Grandma and Mom came to Florida to visit me. I was on the phone, and the 2 of them got to laughing. It turns out Grandma was mocking me on the phone. Every time I would say "cool" she would raise her diet Pepsi and say cool like me, and had Mom rolling laughing. When she got home, saying "cool" became her thing, and Grandpa made sure to tell me how grateful he was that I taught Grandma how to say cool.... NOT!