Is the use of slang really that necessary for your projects? It seems that the meaning of most slang would be lost to parts of your audience, unless it is part of the joke.
Slang will ultimately age a given work or project POORLY. Especially if the slang dies a relatively short lifespan and suffers a backlash (not necessarily PC backlash) in the pop culture because ... well things do get riffed on after a given thing, idea, celebrity, meme, etc... loses its initial popularity and becomes old and trite and mainstream.
And ultimately, JGoldman10, who fetishizes the 80s and 90s to the detriment of his own understanding of contemporary/current pop culture and what people may or may not want in comics and animated projects as well as what is or isn't Kosher in terms of racist terms, sentiment, etc....