A made up word used to confuse people. Can be used to replace words that you have forgotten. A common meaning for durgular is to just say durgular as a definition to piss off people.
Johnny: RU RDY 4 SUM DURGULAR?
Bob: Hell yeah I'm ready for some durgular!
Tim: Dude wtf is durgular?
Johnny: You know, its durgular.
Tim: Fuck you asshole.
Johnny: Don't make me slap the durgular out of you Tim!
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.