jostilation

A pattern of jostling used to describe bumpiness, while driving.

“This country road is shitty AF with all this jostilation.”

jostilation by Mermaid Glitterz July 2, 2021

joscillation 

The rhythmic movement of the brain after helmet to helmet contact in American football.

Many NFL players end up dying young due to years of joscillation.

joscillation by scannerbabe January 8, 2012