An oiler

Noah has become increasingly interested in rocks lately and knows (freakishly) a lot about them so he has determined he will be a geologist when he grows up. So today, our conversation went like this:

Noah: Do you make a lot of money as a geologist?
Me: You can. Depends on who you work for. If you work for an oil company, I would say 'yes.'
Noah: Oh, yeah. I want to do that because I want my wife to be an oiler.
Me: What's an oiler?
Noah: You're an oiler, Mom. I want to marry someone like you.

(So apparently since I write about the oil industry, I'm an oiler. Good to know.)