I disgust it when society use my erasers? What does this mean?

What does this mean?
Answers:    I use soft erasers surrounded by my artwork and I go ballistic when other population use them, they always return with black crud on them which transfers itself to my paper, and spoil my drawings. So I hold on to them locked up and away from prying, thieving fingers.

Besides they lose them and then I can't find one when I entail it.
ur wierd...OCD maybe?