Now, you can probably tell that these are not great pants, but you may be thinking they're not that bad. Well, I assure you they are. You cannot tell in this picture, but this man had back-only cuff stitching.
It's perfectly fine and normal for pants to have stitching going around the cuff area. But sometimes the stitching is only on the back side of the pants, rather than going all the way around. This looks unnatural and ridiculous. Here is an illustration...
Do you see why this is so horrible? If you do not, I would have to defer to Louis Armstrong, who once said "There are some people that if they don't know you can't tell them."