My dad was/is very zealous about announcing his faith. But he doesn't quite have the knack for it, or the tact.
Case in point: When I was a kid, about 12 I think, him, my brother and I were walking into a department store when we encountered a lady out in front who was passing out leaflets for a political candidate. It wasn't even a major election. It was for City Council, or Alderman. But instead of simply saying "No thank you" and walking away, my dad proudly said "No. My king is Jesus Christ in heaven".
I'll never forget the baffled look on her face, or her response("to each their own, I guess"), or the sympathetic look she shot me and my brother. Good times.