VIDEOS:
"Squeak"
Done by Demencia to deface a drawing 5.0.5 drew. Then Black Hat does it, seemingly tearing open another dimension that lets out a sound that's so unbearable to Demencia and 5.0.5. that they get on the floor and cover their ears, and it even cracks Demencia's teeth.
Example of:
Nails on a Blackboard