Why does it feel weird when someone scraps a blackboard or metal with a sharp object?

Question

you know what i mean, it gives off that weird sound, and makes u feel all weird.

Answer 1

i cant stand it,it makes me cringe, gives me the creeps,  i wont even write on a blackboard with chalk, thinking about it right know makes me hate it.

Answer 2

it is a horrible feeling, it makes me feel horrible....

Answer 3

The noise it makes is too high pitched for our ears and makes our hair follicles in the ear go crazy. Your temporal lobe is connected to your brain, so your brain probably feels the vibrations, and that's what makes you feel all weird: your brain vibrating.

...I think...

Answer 4

because it reminds us of the dentist !!!!!!!!!!!!!