Print a Coupon For a Free Regular Size Skittles June 29, 2011 by A Proverbs Wife Leave a Comment Check your emails or log in to your Murphy USA account to access a printable coupon good for (1) FREE Regular size Skittles. If you do not already have a FREE Murphy USA account, sign up HERE. Don’t miss our updates!! Sign up to get one of our FREE email newsletters. They are customized just for our readers so be sure to chose only the topics that interest you.