Originally it means something that has rabies; such as a dog or animal. Can be highly contagious when in contact.
Louis Pasteur discovered a cure for rabies and created a vaccine for it as well.
adjective: used as a description of an event or action that is impressive or extreme
can be used interchangeably with radical
-when something is crazy
-when something is awesome
-when something is extreme
It can take a deep tone to a situation or act.
Scenario: Skater does a crazy trick.
"Dude, that was rabid."
"Yeah man! You gotta teach us how you did that!"
Scenario: Kid fouls a player who goes flying in the air.
"Man, when you went flying I was just hoping you'd make it out alive!"
"Yeah, I know man! It was freaken rabid!"
Scenario: Kid shows drawing to friends
"Holy Skizzles! That's rabid, man!"
"How'd you learn to draw like that?"
"Yeah man, I agree that's totally rabid."