A Japanese rockabilly guy or girl. Usually spotted dancing at the entrance to Yoyogi park in the Harajuku district of Tokyo.
Q: Where's that Elvis music coming from?
A: It's just a Billy dancing in front of the train station.
A: It's just a Billy dancing in front of the train station.
by jstewart October 05, 2005
by Jstewart September 01, 2003