A magic word or spell used by mental retards to show how verbally retarded they are while reducing the listeners appearance to that of a physically retarded person.
"OMG what happened to Barry has he bells palsy now or what he looks shit, like he's had a stroke?"
"oh no he's fine someone just used fluidency at a meeting "
Guy/girl : Why are you wasting time by learning languages that you'll never use?
You : I'm a fluency hunter and I'll do everything in my capability to be the master of the language I'm learning