Penis cannon:
1. A cannon shaped like a penis that fires ordinary ordinance.
2. A cannon that fires a penis instead of ordinary ordinance.
3. A cannon that fires several penises instead of ordinary ordinance.
4. Any combination of the above.
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".