In reference to a booty, levi jeans "501," jeans. so if u say damn that girl has a 501 she has a nice big ass
by Sam February 14, 2005
by Mr. BoJanggels November 30, 2006
by Therealone501 April 25, 2015
A party announcement. Could be a small get together or a large all-out bash. In other words, it's going to be fun, so get off your ass and come!
by red_rider April 14, 2004
Reference to the past and-or better days. Old school, vintage, the way it used to be, solid, reliable, dependable.
by Chill-in Chef May 12, 2009