A comment which is only vaguely relevant to the situation and made with the intention of arousing amusement among peers. To qualify as a true renejoke the undertone must either be sexual or a downright trivial observation.
Tim: "I had a really nice day today"
Rene: "Oh, just like I did the other day"
...pause while everyone present waits for the tenuous link
Rene: "I fed a bag of stale pretzels to a gluten-intolerant child"
Tim: "Another 30 seconds of my life wasted on a Renejoke"
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.