1. In sports...someone very beast-like. A very good player. A big, massive player. Someone that you don't want to mess with. Usually a defensive lineman.
2. To deisel meister someone is to run them over (football) or dunk on someone (basketball).
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.