A phrase originated from the deep south of the United States (Alabama, Mississippi). The phrase is typically used to point out a human action behind an otherwise unexplained, often unusual, phenomenon.
" Someone must have driven that car all the way up that steep cliff, even if seems impossible. Dead dog on a fence don't get there by itself, right?"
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.