it makes a horrifying screech noise like nails on a chalkboard : r/backrooms
fingernails scratching a chalkboard Stock Photo - Alamy
Cover Your Ears! | Science | AAAS
Amazon.com : HAGOROMO Fulltouch Color Chalk Non-Toxic - [12 Pcs/10 Color Mix] 1 Box, Assorted Dustless Washable Chalk for Kids, Professional Use, Sidewalk, Chalk Board, Blackboard : Office Products
Replying to @rachelxscott So how do you feel about the original sound?... | TikTok
Science Blatherings - Useless Factoid #1: The skin crawling sensation that the sound of chalk screeching across a chalkboard illicit's is a genetically determined trait. | Facebook
Screech! Sounds which are worse than nails on a chalkboard
Intense screeching* : r/memes
Why Fingernails on Blackboards Sound So Horrible | WIRED
Revealed: Why fingernails down a blackboard sound so awful | Daily Mail Online
The feeling you get when nails scratch a blackboard has a name | New Scientist
Do you get annoyed with screeching noise of chalk? THIS repulsive reaction to certain sounds is
Wishbone on X: "Sound of nails scratching chalkboard or cat screeching? http://t.co/mV26Fgx2pG http://t.co/btZtX1AaUQ" / X
Fingernails on a Chalkboard: Why This Sound Gives You the Shivers | Live Science