Eaf means absoloutely nothing, but can be used in context to replace just about any word or convey an emotion.
Can be used as an acknowledgement, greeting, agreement, protest, etc. depending on what tone it's used in.
Speculated to have originated in the clarinet section of Bayside High School's (Palm Bay, FL) marching band some time around 2001-02.
"Grrr, arrrrrr, eaf, and other such expletives."
"Fuckin.... . . eaf.. . oi.. ."
September 29, 2003