This is Why I Am The Way I am

My dad called me a billion times this morning, but i didn't hear my phone. So i finally call him back after lunch. Here's our conversation:

Dad: What, have you been sleeping all day?!
ME: I've been at work! It's Monday!
Dad: Isn't it a holiday?
Me: Yes, but I don't get it off so I'm working.

Blah blah...he hangs up, my sister calls my work phone so i'm talking to her about my crazy mother, then my dad calls my cell again so I answer it while i still have my sister on the work line.

Me: Hello?
Dad: When do you get off work?
Me: 5pm
Dad: OH MY GOD...
Me: What?! That's a normal time! What's wrong with you?!
Dad: I wanted to go see the baby today.
Me: Well [my sister]'s not even home right now. I'm on the phone with her.
Dad: Oh? Ask her where she is.
Me to Sis: Where are you?
Sis: At the dr's.
Me to dad: She's at the dr's.
Dad: Ask her when she's coming back.
Me to Sis: When are you going to be home?
Sis: In about an hour or hour and a half.
Me to Dad: In an hour or so.
Dad: Ugh, forget it. I'm not going today.
Me: You're nuts.
Dad: Huh?