When you are in a manual transmission vehicle, and you shift from 2nd gear to 4th or 5th, or 1st to 3rd. Typically works best if you are going down a hill.
We were running a yellow light and Dad stalled out the Escort doing the taxicab shuffle.
1. When you are driving, you go into Scotch Overdrive when you shift into Neutral. (Saving fuel, being a pinchpenny.)
2. Trying very hard to save money, to the point where you annoy others with your cost-saving antics.
1. We were cruising downhill on Main Street when he went into Scotch Overdrive.
2. Contractor went into Scotch Overdrive - sent us on a 5 mile detour just for some cheaper nails.