After drinking large amounts of robitussin to get high you usually get gassy as hell and get what I like to call the robo-farts. The day after if you're still afterglowing you'll be ripping robo-farts all day.
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".