I think all teachers have a specific Pet Peeve and one of mine is definitely PUNCTUATION! I believe that it is extremely important especially in today´s society in which we mostly communicate through writing whether it be an email or a text message and so on. Punctuation should be used correctly to make sense of your writing to avoid miscommunication in a lot of contexts. Using correct punctuation helps deliver your message exactly as you mean it. Here are some humorous visual examples:
*A Pet peeve is a minor uncontrollable annoyance that a specific person finds annoying to a greater degree than others.