Celebrate Flip Flop Day With A FREE Tropical Smoothie May 28 Shared by Mrs. Weber Leave a Comment Grab those flip flops and get ready for a cool treat with a FREE Tropical Smoothie on National Flip Flop Day! Share:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to email a link to a friend (Opens in new window)MoreClick to share on Reddit (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to print (Opens in new window)