"Excuse me, does the queue run forwards or backwards?"
"Oh, it runs forwards. I just got bored doing this every day so I thought I'd mess with people."
"Oh, I... er...see."
"Yeah it's much more exciting! I have to guess when the queue's moved on. Did you know it takes them 4 minutes to make a cappuccino?"
"So I've been figuring out how many people order each drink on average and then using a probability algorithm I can estimate exactly when I should take a step backwards! It's based on a script I..."
"Did you hear that? I think it was my phone? Excuse me, I..."
"But, don't... wait... I... you... you were supposed to understand... I... love you..."