Is making a small joke about a bishop mocking?

My friend was mentioning a bishop, so I bluntly made a joke "What? Like the chess piece?" I got a few laughs from my other Christian friends before that friend who mentioned a bishop said it was mocking Christianity. And it was running through my mind getting confused if I'd done something wrong or blasphemous, though I don't have a clear mind on what is blasphemous and what is not. Side note: I am a Christian myself, and I'm trying to learn more about God and Grow more disciplined too, so I'm not very knowledgeable if it's a way of mocking.