RAF= Random Arithmetical Function
I'd add, subtract, multiply and divide, and was grateful i had no need to cos, sine or graph functions or whatever gizmo did, because, having been turned down by RAF...
by Lwulf June 27, 2013
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The word RAF means "Retard Ass Fuck". It is most commonly used to describe someone who acts in a stupid manner.

ex in sports.
"hey man could you pass the ball better your playing like a RAF out there"
by Dont You Worry Child April 10, 2013
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royal air force best trained pilots in the world only the second best air force in the world because the usa has more planes.
em none realy cant think of one?
by darkviper July 25, 2005
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Damn that argument was RAF.
That aaron guy is hella RAF.
by Aaron & Sam October 23, 2015
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"Every time I talk to that guy he just gives me this look like he hates me."

"Oh, he's really a nice guy, he just has a resting asshole face (RAF)."
by blottomatic November 14, 2014
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The British Royal Air Force. One of the best AFs in the world.
by AJAW August 20, 2004
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