A very wet state of female arousal. To be Tail Bone Wet, a female is involved in sexual activity on her back and her state of sexual arousal and any moisteners make her so sloppy wet that her love juices overflow from the vagina, down her ass crack and dampen her lower back.
Roger had his girlfriend so turned on from all of the oral sex he was giving her that when he finally gave her the bone he reached around and grabbed hold of her ass checks and found her to be Tail Bone Wet.
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.