Me: I'm here to pick up my iPhone. It was getting the battery replaced. (Hands authorisation form given 30 minutes prior to Apple Store Genius)
Genius: Okay, I just need to see some ID.
Me: (Shows ID)
Genius: Hmmmm... the name on the form here is Paul Smith, and you're not Paul Smith.
Me: Uh...no...I'm not. I was just given that authorisation form half an hour ago and told to come back. I also had the same form emailed to me if you need to see it.
Genius: No, that's fine. I'll just go back and sort this out.
Me: (Gets out iPad. Connects to Wi-Fi. Retrieves authorisation form from email and checks to see that name and all other details are correct on it. Waits. Waits. Looks at Facebook. Waits. Looks at Twitter. Waits. Waits.)
...Twenty minutes later...
Genius: (Comes out and looks perplexed) Is that the iPad you brought in to get fixed?
Me: No, I dropped off an iPhone 5 that needed a new battery. (Pulls up authorisation form on email and turns iPad around for him to see)
Genius: Oh, I know where that is. I'll be right back.
I was lovely and polite to him for the rest of this transaction simply because I didn't want the poor Genius to feel stupid.