An attractive, or whimsical yet unexpected rarity/oddity; something that would cause a person, at the sight of it to say, "Wull gee, aint that somethin?" Such as finding a two dollar bill folded into a crane under your seat at a football game, or finding some petrified wood that still looks exactly like a stick, or a two-headed jackal-ope in a taxidermy shop, or a mini-cooper with giant tires and hydraulics.
Well I'll be darned ... aint that a blond duck of all things? A mobile cheese shopthat goes around via a cow-shaped blimp... I will indeed be darned.
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.