Waffling is the repeated design on the back of many official Disney pins, this article explains a little more about it.
I Love Mickey Food a Waffle Lot Disney Park Button Mickey Snack
DLR/WDW - Peter Pan 4 pin set (Captain Hook's pirate ship)
Waffling issues on Coco Mystery Pin Blind Pack from shopdisney.com
Disney's Whimsical Waffle Mystery Pin Pouch Unboxing!
Does it get any better than that?.
Mickey Mouse Breakfast Two Pin Set Waffle Toast Egg Bacon Disney Pin
Daisy Duck Pins
Maestro Forte
Whimsical Waffles Collection Disney Trading Pin Series
Stitch Sad - Hidden Mickey Emotions
WDW - Starter Pin and Lanyard Set - WDW 35th Anniversary - Figment on Teal