1) The words that an incompetent person will say when they are actually referring to a local law enforcement agency formally know as the "Highway Patrol"
2) An incorrect reference to a law enforcement entity made by confusing the meaning and context of the two unrelated terms "petroleum" and "patrol"
3) A grammatical error made by a person who is inept at speaking english properly.
The top dog of engineers. The big dick bandit. Is a master of science and math, specializes in drilling, reservoir and completion of oil wells. Girls get wet at the site of a Petro Engineer. A good Petro Engg doesn't need a lab to determine the composition of a crude oil, he merely smells the sample and gives raw data without breaking a mental sweat. The Petro Engg is often the highest paid engineering major and as a result has many nice material objects. Having a degree doesn't give you instant access to becoming a Petroleum Engineer, some other requirements need to be met first such as having a diesel pickup and chewing tabacoo
Did you see that guy slaying dragons by that oil well? Yeh, I think he is a Petroleum Engineer you can tell by the diesler he is driving and the massive dip in his mouth.
A position given to those who transfer gas to your vehicle. Amateurs are known as Gas Attendants, however as their skillset increases, they become PetroleumTransference Engineers.