Top definition
The practice of improving the life of your fellow man by generously sharing your music as you drive around with your windows, and possibly top, down, blasting whatever magnificent blessing is enhancing your own life out to others. Because you love your neighbors, and it's good to share.
Upon hearing a few bars of thumping bass and rhythmic shouting warped on either end by the doppler effect: "I do think a little urban philanthropy brightens up the neighborhood from time to time."
by peterbilt May 01, 2011