What could it possibly have been?

Submitted by Chris Hiley on Mon 25 Jan 10 - 09:34
in

Overheard outside Westfield shopping centre on Saturday. Three men, employees of London Transport, chatting. First one "That's Buddhists. It's Buddhists". Second one. "No, Catholics." Third one "Yes, right. It's definitely Catholics."

I didn't hear any more. Puzzled. What could it possibly have been?