diddly fiddler Share definition Flag (noun), a term used as an alternative word for sex, or someone who has a lot of sex "wow! Kaden probably fiddles so many diddlies!" "Dude, your such a diddly fiddler!" diddly fiddler by quakeden January 14, 2017 0 0 Get merch Get the diddly fiddler mug. Buy Now — $32.95 See more merch