` (UTC)   ``One of the earliest examples can be found in a 1935 Fleischer brothers cartoon called Betty Boop Making Stars.``  The cartoon which iontains significant racial stereotypes is viewable on Youtube, A variation of the Riff occurs about 4:10/   The original writer is lost to history  but the above article gives some insight into the reasons behind that, and how and why it was written.   15:57, 8 February 2010`