I always assumed that "Heavy Up" was quite obviously inspired by that mother of all assholes, Donald Trump. Just like "Don't Crash the Ambulance" was quite obviously about Bush Sr. and Jr., or like "El Macho" was obviously about Jerry Springer. Which doesn't mean that everything fits - it doesn't. But that's the freedom of art: You take something out of the newspaper, but then enrich it, change it, transform it and make it something that's more universally true. A "character" that doesn't exist as such, but is constantly being reborn in various human beings. I know plenty of people who should "heavy up", even in my own life.
Oh, and I like "Heavy Up" a lot.