My husband showed me this picture yesterday. I love how the use of punctuation in English can change the meaning of a thought. My husband had to show me this as the future English teacher. I told him that it was the difference between "Let eat, Grandma" (going to eat with your grandmother) or "Let's eat Grandma!" (eating your grandmother). He told me that is the best way to talk about commas with students, they because I put it that way he would never forget.
Photo used under Creative Commons from jasleen_kaur