Top Definition
The yellow and green 'leaf' badge that first year drivers must post on their vehicles in Japan. Literally means "NEW DRIVER - DANGEROUS".

Regardless of the situation, anyone involved in an accident with a soshinoya will be found at fault and will incur fees of accident.

Has become popular in recent years with the subset of import enthusiasts that are interested in items that are "JDM".
"Dude, check out my new soshinoya badge, now my Civic is JDM as fuck!"

"Remind me not to park next to your noob-ass next time."
by Ryan Liwanag January 25, 2008

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