A man that marries a rich/wealthy woman and uses her for her material and monetary benefits. A man that cares more about his wife's/woman's bank account than he does about the woman.
An Oildriller can be a young, good looking guy in La Jolla that provides for his recent divorcee wife in "many" ways, but does not actually love her. He is there for her whenever and benefits off her recently settled prenup bank account
"That oildillin' dude doesn't love that beezy; he's only in love with her bank roll."
When a fine lookin' latina woman takes the gas pump and proceeds to pump her vag with diesel fuel until climax. This can, but does not require the use of a credit card.
Before having sex first the lady will take an exessive amount of laxatives. Next the gentleman will prosition her into the pile-driver position and then start banging her ass. Eventually she will have to take a shit, you keep on going until the last minute. When you pull out there will be enought pressure behind the shit (probabley diarrhea) that it will exit the ass looking like when a someone strikes oil.
Pablo: Damn, Karen's a nasty girl. Last night we were doing the Missouri Oil Driller when I pulled out, she aimed at me and I got drenched.