Nuckfuttery comes from the original phrase fuck nut, subsequently changed to nuck fut, which is a nicer way of saying fuck nut without being too offensive.
Nuckfuttery (n.) generally describes something that is one of the following:
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.