A type of rock music that is used as background mood music for taking lsd and most of the songs were written by musicians who were on it at the time and promotes the taking of lsd and was the favorite music of the 1960's hippie generation and also of the neohippie movement and of dark hippies.
I love acid rock.
by Deep blue 2012 March 20, 2010
In the 1970's and 1980's, what older people used to call heavy metal and hard rock. Now most of those people are dead, but sometimes you'll hear someone say it at the retirement home.
by Jack Batemaster January 07, 2004