A really blonde person. Typically a very weird blonde person that has tendencies to act out. For example: acting like a furry, squealing, screeching, etc. The Butter Monster also likes butter to the gallons. Practically made out of grease. Many people do not like the Butter Monster, but there are some exceptions.
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.