Bass Tapes refer to the old school cassette tapes from the late 80's and early 90's. These tapes predated CDs, and contained experimental bass-heavy music, think grandfather music to to Trap, Glitch and DubStep.
Remember that bumping car you drove from the 90's? Man, we'd bump from block to block with 18's in the back and bass tapes in the cassette player. Thumping the neighborhood.
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.