Butter was fighting bedtime. We sat on the rocking chair in the dark near to a sleeping Peanut. It wasn’t that late, and though I was tired, he was being adorable as only a post-darkness, non-tantruming two-year-old can be.
Me: Butterbean, when you are grown up are you going to live somewhere else or are you going to stay with Mommy?
B: (exasperated) I don’t know.
M: …
B: I know. I live snow blower guy.
M: With the snow blower guy?
B: Yeah. Snow blower guy. Lot o ladies. Lot o mans.
M: Oh.
B: Yeah. Mommy come back o lot. Daddy come back o lot.
M: We can come back to visit?
B: Yeah. Mommy come back o lot. Daddy come back o lot. Cat come back…cat make ice cream?
M: Can the cat make ice cream?
B: Yeah. Cat make o lot ice cream. Snow blower guy o lot ice cream. Mommy o lot ice cream. Daddy o lot ice cream. Peanut o lot ice cream. Butter o lot o lot of ice cream.
M: That’s nice of the cat to make so much ice cream.
B: Yeah. Snow blower guy like cat.
Well, sure. I can see why.
NaptimeWriting 
I think “Oh” pretty much covers it. I also use “Interesting” as a good general response with my own son. Seems more appropriate than “WTF?”
But seriously, I greatly enjoy attempting to follow a two-year-old’s train of thought. Which mostly seems to be often derailed. It’s the most amusing part of my day.
My defaults are “Oh,” “Really?”, and “oh my!”
I try to stay away from “are you insane?”
I love how they think.
Me, too.
He’s a genius, obviously.
Obviously. I can’t get the damned cat to do anything. And I never realized how much downtime a snow blower guy would have in Northern California.
So that’s what cats are for.
Mine is currently genius at elaborate logic circle dances. “Well, I want that dress, and so I want it, and so you should get it because I want it, all right?”
Awesome and unusual circular logic. They usually end up claiming *they* get it.