OK, here goes. I'm not at all proud of this...

A couple of years ago I used 120K points for a quick weekend in DXB in F.

I arrived at the airport a couple of hours before the flight, and went to the F queue - there was only one desk for F. I only had hand baggage, so I just wanted a BP printing.

There was a family checking in, and there were bags everywhere. Not sure what was going on, but stuff was being moved from bag to bag.

After about 10 minutes, I noticed the the J queue had disappeared, so I walked over to the desk. At the same time, somebody from Y arrived. Now, I'm not sure whether or not the check in agent had called the person from Y, but I think she probably had. So, I got there first, and the conversation went something like :-

Her - "He's next" (pointing at the Y passenger)
Me - "I'm in F, I just want my BP" (*cringe*)
Her - "That's the F line over there" (pointing at where I'd just come from)

So, suitably admonished, I move back behind the bag shufflers and wait.

I wait another few minutes, and the J agent finishes with the Y passenger. She looks at me and calls me over.

Me - "You said this is the F line..." - like a stroppy teenager.
Her - "It is, but you can come here now"
Me - "No, I'll wait here" - bottom lip drooping
Her - (Shrugging shoulders) "Next" - from the Y line

Anyway, there was somebody quite senior there who had seen this going on, so she called me over and asked if there was a problem. I said I just wanted my BP printing - and she did it in 30 seconds.

Now happy, I walk away and catch the eye of the original check-in agent. I waved my BP at her in a "Look, that's all I wanted" sort of way. Even before I got to security I was thinking what a d*ckhead I must have looked