To be knocked upside the head, get your ass-kicked, or otherwise beat up. Can be used figuratively to describe some other type of defeat (i.e. workplace politics, embarrassed).
Possibly describes a low-blow or other uncommon tactic in a fight.
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.