Raging Throttle 

When a person, usually a first timer, starts out on a motorcycle and the acceleration throws them backward and that movement forces them to pull the throttle open uncontrollably. Causing the motorcycle to accelerate out of control amplifying the problem. Usually resulting in a crash.

Grandma had a Raging Throttle, she let the clutch out too fast and flew across the yard out of control hitting the fence.

Raging Throttle by Jetmec October 21, 2011