This is our relationship with Logan, in a blog post. Transcribed as closely as I can recall what happened 10 minutes ago:
He walks in the room where Stephen and I are.
Logan: Ew. Stop kissing. You guys stop it.
Logan: STOP! I said stop! I mean it!
We ignore him. He jumps on Stephen's back. We continue to ignore him and he leaves, adding: "You guys are so weird."
Stephen picks up the guitar and starts singing. "Logan sucks and Logan sucks. Logan sucks, he really sucks."
"STOP!" Logan screams from downstairs.
"Logan sucks at Fun Run 2....." Stephen sings joyfully.
"No I don't, it's you, you're the one who quit!"
Repeat 8 times.
"I'm going to tell Dad, I mean it, stop!" Logan announces.
"Logan sucks -" Stephen exuberantly sings back.
The garage door slams as he goes out to the garage to tell Dad.
Later on, Stephen apologizes.
"Logan, I'm sorry. I just say those things to play with you, because I think it's funny how you react."
Logan sits there motionless. He likes to play dead sometimes.
"I actually think you're really smart," Stephen continues. "You might be a manager at McDonalds one day. That's how smart I think you are."