Top Definition
A sex song.
Origin: Japan.
Basically, it's a song about p*nis and sex.
You'll know what Yokachin is when your in drinking parties.
Most highschool boys know what Yokachin is.
by The person(: that knows. March 08, 2010
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.