Harding was from humble roots in the midwest, spoke in a a simple country manner, promised government jobs to his friends, had an administration largely associated with corruption, had a vice president who didn't say much, was immensely popular when he was elected before seeing his popularity nosedive until it was almost non-existent. In short, the only differences between Harding and the junior Bush was that Bush served 8 years to Harding's 2, and Harding never sent a single American soldier overseas to die.
Harding was not, in fact, a negro (this rumor was started by his oppositon prior to the 1920 election), though he was the first President elected after the passing of the 19th Amendment (the amendment that allowed women to vote). Unlike the junior Bush, Harding actually succeeded an *un*popular President, in that Woodrow Wilson won re-election by promising not to get involved in World War I, then entered it anyway. Another departue from Bush was the sheer mediocrity of his successor, Calvin Coolidge, who was famous for spending most of his eight years at the golf course.
The G does not, in fact, stand for Gangster.
Bertha: Shut yo mouth!
Gertrude: I'm just talkin' 'bout Warren G. Harding.
Bertha: Then I can dig it.