That reminds me of my old roommate, Shorty. The other roommates and I would tell him an inside joke that he had come up with, and he would just always give us a confused look and ask what the heck we were talking about.

I'm pretty oblivious myself, and I can be pretty forgetful. My parents will ask me to do yardwork or something a week or so before I have a day off to do it, but then I completely forget about it. Then I get yelled at. I'm always thinking I'm losing my phone (usually while I'm talking on it or just holding it). Lots of stuff like that.