I had someone tell me that I am a problem on the boards and ask me "how old are you?"
I had a wonderful response all typed out and was ready to submit when I saw the thread had been deleted.
This seems like a good place to share my response:
I am old enough to know the following:
period: n. A punctuation mark ( . ) indicating a full stop, placed at the end of declarative sentences and other statements thought to be complete, and after many abbreviations.
comma: n. Grammar. A punctuation mark ( , ) used to indicate a separation of ideas or of elements within the structure of a sentence.