Definitions by Mustang Ed

Fast friends 

Fast friends meaning loyal friends, close friends, permanent friends.

John and I have been fast friends since we met in the 4th grade.

Fast friends by Mustang Ed October 1, 2011

Fast 

Fast is used as an adjective meaning 'close', 'strong', 'loyal', 'permanent'.

Fast colors meaning resistant to fading. Fast friends meaning loyal friends, close friends, permanent friends.

John and I have been fast friends since we met in the 4th grade.

Fast by Mustang Ed October 1, 2011