Klaxons Slang (Anglo-Klaxon) This is when people are guitar-wanking (showing off a song.) Although it doesn't have to music-related - just something over the top and unnecessary.
John - "Man, Wolfmother Jazz Finger too much!"
by Spider Gregg October 25, 2006
To show off in an unecessary fashion
'The Guitarist In That Band Just Jazz Fingered For The Whole Night'
by Vibey Johnson October 07, 2006