Hi, Nothing to say here, just wanting to know what you mean.
I've used the expression but only now bothered to look it up online. "The jig is up" means, I think, the "dance" is over, or that the deception had ended.
There are other definitions for "jig:" fishing and machining to name two. It's an interesting word, jig.
Are you referring to these contexts? Or am I completely missing your point?
I thought he was gettin' jiggy with it.
http://en.wikipedia.org/wiki/List_of_ethnic_slurs_by_ethnicity
I thought I as naive about racial epithets.
When Christ expired on the cross that passage given in the Bible is “And HE gave up the ghost’’. ‘’up’’ means as per ‘’dead’’,’’ over’’, ‘’to bring to an end’’ or ‘’surrender’’. Similarly in WW2 when Hermann Goering realized that the Allied air forces had deployed a long-range fighter plane (the P-51 Mustang)that could escort bombers into Germany he said “When I saw those P-51’s over Berlin I knew the jig was up’’.