1) When you jerk off and some semen gets in your belly button, but you don't know that and after awhile it dries and ferments making your belly button hurt. Leading you to either put your finger or any other object in there. Feels hard but when you push in hard enough, you get a gooey substance out of your button consisting of ejaculate and lint.
2) Seaman's Semen
The gelatinoussubstance that accumulates within the navel cavity after extended periods of hygiene neglect. Some have found said substance useful for removing rusted spots on oxidized surfaces.
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.