I know all sentences must have a verb to be grammatical. But where is the verb in:
Best Day Ever!
Best is an adjective. (what kind of day). Day is a noun. Ever is an adverb. (Of all times)
So where is the verb?
I also noticed that:
is only an interjection.
So if we repeatedly keep breaking grammar rules, why use grammar at all? And can't we just change grammar to fit our every needs, making it a lot easier to use?