If you follow the paintbrush with your eyes while not moving your head, it forces you to use emdr, which is a therapeutic technique to calm anxiety/panic. Watching fish swim causes the same effect.
tags:
from: https://abovethe-best.tumblr.com/post/39686973932
recommended: abovethe-best tumblr, prematurecumshots #dichyrtmw primes dick-23 priyarai