False advertising
We’ve already seen that some customers think it’s fine to walk into a store, try out 5 different spray paint colors, and put back the ones they don’t want. That’s cheeky enough, but this dog owner takes the biscuit. Not only did they try out the comb on their pooch first, they then put it back on the shelf when they weren’t happy with it.

Sure, perhaps they thought it didn’t live up to its “self-cleaning” label, but what is the store owner going to do with the item now? They can’t re-sell it, so they’ve lost the money. This is the problem with rude people, they don’t think about how their actions affect those around them.