Very “sharp” pencils
This is one of the reasons pencils are unpopular. However, pencils come with their own set of advantages as well. Regardless, the fact that this type of problem exists with pencils is what makes them so aggravating.
These appear to be quite sharp, but the end of each pencil has yet to have its lead replaced. Most of us are also aware that putting one of these in a pencil sharpener will take a long time to get them back in working order.