A bay area slang term (and program) where multiple people can ride there bikes together through cities and find adventure. If one or more cyclist(s) were to yell the phrase "bike party" at other bikers if wanted, they could proceed to ride through the city together(commonly as a mass). Bike parties are most abundant in beautiful San Jose California USA. Bike parties are most commonly done with fixed gear, or fixed gear style bikes.
by zombyfan4ever September 01, 2010