Blame It On The Edit, I Guess
One of the butts of the jokes in some reviews is factory defects. Be it a wrong color, a different design, or a missing or excess piece. Producing a lot of products at the same time can actually make room for some error. While it is not deliberately done, it actually makes the product more interesting or just plain hilarious.
Normally, we would rant and complain about the defects in our products, but in this case, I doubt that you will. One customer shared how his purchased product wrote ‘farts’ instead of ‘parts’. I mean, who would want an annoying smell together with their purchased item. If you don’t find this amusing, I don’t know what will.