Little Johnny is in English class... And the teacher calls on the class. ""Who can give me an example of a sentence using the word, 'Definitely'?"" Little Susie raises her hand, ""The sky is definitely blue."" ""Very good,"" replies the teacher, ""but when it's nighttime the sky is black, and when it's raining the sky is grey. Anyone else?"" Little Timmy raises his hand,""Grass is definitely green."" ""Very good,"" the teacher again replies, ""But Kentucky has blue grass and grass turns brown as…