This an act you do with your sexual partner with a vehicle, it's when your partner turns on a car, puts it in park and revs the engine as hard, whilst you insert your dick into the exhaust pipe and start fucking the car exhaust pipe while they are revving the engine causing your dick to burn
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".