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1.
Period of time after the 40's ang before the 60's. Known for Malt Shop Music, and great cars.
That 50's car is amazing with those high fins and crome everywhere, they don't make them like that anymore.

Elvis is one of the best known 50's Malt Shop singers.
by Shadow111a June 25, 2007
 
2.
another term for the fuckers called... COPS
"dude, we better fucking run and hide our shit, the 5 0's are coming..."
by crestfallen June 07, 2004
 
3.
The greatest time to have lived. A time when we lived in a peaceful world without violence. The '50s was a time when everything was great. The movies, the food, the styles, etc. The people in the movies actually had talent and the music that was popular had a meaning, unlike today's crap that's considered music. I should've lived in the '50s. The 2000's suck!!The '50s was Heaven.
The '50s was an awesome time to have lived in.
by the man is here April 15, 2006