Ordinary colleagues have to leave after a meal. I said, slow down, is that all right?

Generally, colleagues will leave when they meet for dinner, and then you say it is appropriate to drive slowly. As a result, he said, what do you mean you can't fly? Did you say something wrong? I think something is wrong. You speak too slowly, and he says he can't fly. He said it was a joke, and you said it was a concern. I think it's quite normal, and it's also quite in line with etiquette. It's nothing. I don't know why you think this is wrong. Can you tell me what you think?