also flimflam, 1530s, a contemptuous echoic construction, perhaps connected to some unrecorded dialectal word from Scandinavian (cf. Old Norse flim "a lampoon"). From 1650s as a verb.
Examples from the Web for flim-flam
If any of this flim-flam is true, the lumbersexual already sounds way more annoying than the metrosexual.How Straight World Stole ‘Gay’: The Last Gasp of the ‘Lumbersexual’|Tim Teeman|November 12, 2014|DAILY BEAST
Gaydon has a great deal of observation and common sense, and was never plagued with a flim-flam of fancies.Clementina|A.E.W. Mason
He lied to me and tried to flim-flam me out of my boats before my dad was buried a week.El Diablo|Brayton Norton
Have the ticket men and the entrance attendants been working a flim-flam game on us?Joe Strong The Boy Fire-Eater|Vance Barnum