Something I learned in grade school

 As August sometimes in the month where kids go back to school, it got me thinking about this lesson in science class where we learned how to open a stuck jar with hot water. If you stick a glass jar with a metal lid under hot water it makes the jar easier to open. When I was really young I always felt terribly clever when I opened jars that way. Anyway, if you're going back to school this month, I wish you every success and if you have to open a difficult-to-open jar, just stick it under some hot water!