When someone preaches some truths, you use this phrase (usually in comment sections online) as a way of agreeing.
For instance on Facebook you may have:
Person A: "You should never blame a whole group of people for the actions of a few people within that group!"
Person B: Say It Again Louder For The PeopleIn The Back.
"...and Africa is a continent, so basically, everything you've said is bull and only a tree would believe it!"
"Say it backwards, Howard."
"What? What's that supposed to mean?"
"Say it backwards."
"...uhh..."
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.