Shuck: To get rid of, ditch, throw away. To try to shed your true image in favor of a false one.
Jive: Trying to adopt a new social status, pretending to be "all that" + a bag of pentium chips.

To shuck and jive" originally referred to the intentionally misleading words and actions that African-Americans would employ in order to deceive racist Euro-Americans in power, both during the period of slavery and afterwards. The expression was documented as being in wide usage in the 1920s, but may have originated much earlier.

"Shucking and jiving" was a tactic of both survival and resistance. A slave, for instance, could say eagerly, "Oh, yes, Master," and have no real intention to obey. Or an African-American man could pretend to be working hard at a task he was ordered to do, but might put up this pretense only when under observation. Both would be instances of "doin' the old shuck 'n jive."

It has been adopted into non-Afroamerican speech, with a reference to behavior adopted in order to avoid criticism.

Not the whole truth; or manipulating something to get it your way.

To act like a nigger.

to try and wank and be cool at the same time.

as chris rock once said somewhere (I can't remember where from) "Ain't no shuckin' and jivin'"