Let's say you want to try a couple Skittles but not all of them just for the heck of it. Then you leave the bag with the remaining candies on the corner and walk away.
Most Helpful Guy
Lol yes, that's stealing.1
Most Helpful Girl
Yes, it's stealing. The person opened a closed package/product and ate some of it without paying. They also contaminated that opened package and cannot resell it.0