#825 When you need to erase something but the eraser of your pencil is already worn out

Instead of the delightful sound and feeling of an eraser snubbing out your unwanted marks, you are greeted with the screeching vibrations of metal or plastic against paper. You'll also be able to look forward to some nice streaky marks on your paper when you intended just the opposite to be there, absolutely nothing. Where's the Magic Rub when you need it?

It's just slightly annoying.