This bottom was unlocked

At the physics building at Duke, there is a side door that goes in on the lower level. Sometimes, when we're on campus, we park over there, and use that door to go in to the bathroom. There's a card reader there, which would lock her out if it was on, since her ID can't swipe into the physics building. The other day, she was jogging around campus by herself, and fortunately, the door was unlocked. The next time we went in that door, she decided to tell me about it:

Kim: The other day, I was running over here, and I really had to go potty. But fortunately, this bottom was unlocked, so I came in here to the potty.
me: Ha, what? "This bottom"?
Kim: Yeah, you know, that door, the bottom door.
me: "This bottom"?
Kim: It's fine, it's fine, don't worry.

I feel like a shape

Kim is pregnant. I've been running and playing tennis a lot. I commented on this, and Kim did not appreciate it:

me: I actually feel like I'm in pretty good shape right now...

Kim: Humph. I'm glad somebody does. I feel like a shape.

What are you piecin'-a-junk me for?

Trying to find a good configuration for sleeping, I was uncomfortable and had to rearrange. Kim felt this remark was directed at her:

me: Grr, piece-a-junk

Kim: Geez, what are you piecin'-a-junk me for?

--

about a month later...

me: Piece-a-junk...
Kim: What are you piecin'-a-junk for?
me: Didn't you already get a blog entry for that?
Kim: Yeah! Can't get another one! Heh! 

I like arguments

Can't provide context here, but...

Kim: I like arguments. Especially ones where I'm right.