It's a saying to describe someone, particularly an Asian Male who thought himself is so American, but then his Chineseyness shows from his broken language.
Calvin: What r u saying? Fake American!
Sam: Fake? There is no such thing as fake American.
Susie proclaimed 'looks like we're going on an American road trip then 🇱🇷'. It was entirely Fake Americas fault. They immediately issued a Susie-sorry and gave her an honorary doctorate in Monkey-magic from the University of Liberia.
Someone who is addicted to obtaining money and building wealth. A money addict and fanatic. Breadheads often work more than one full-time job, and some even participate in illicit activities to "obtain the bread".
I don't buy the schmegegge about Morty sleeping with Moira.
His version of the story was pure schmegegge.
The whole schmegegge was made up to get Liz a little bit of attention.