To shift from very high rpms in higher gear into lower gear, thus driving rpms even higher, way past redline. This leads to severe engine damage, since rev limiter cannot protect an engine in this situation.
A very costly maneuver, typically performed in street or drag racing when people shift from third into second instead of fourth.
I was at 6k in third, and then I did a moneyshift. Now it will cost me 2 grand to fix up the engine.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.