Definition
An unconventional or counterintuitive solution to a difficult problem.
How People Actually Use It
When several people get out of a car at a stoplight, and have sex on top of the car. A sex act that is extremely difficult to pull off, and has an extremely high probability of arrest. DO NOT ATTEMPT
"Did you see those two have sex on their car??" "No, i can't believe anyone would try the Japanese Fire Escape!"
Source: Urban Dictionary