To 'read' is to harshly critiqued/insult someone with your quick wit. To 'read for filth' is to really lay into someone and verbally (and often humorously), tear them apart.
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.