A: Mary is a lucky lady. Her husband Jamie seems very enthusiastic about and well prepared for the baby.

B: Well, let’s wait and see. Guys may well talk the talk, but how are they going to react when the baby vomits on their best clothes?

Note: This idiom means “to speak confidently or boastfully about something.” It’s often used in the full phrase “talk the talk and walk the walk,” which indicates that one can carry out what they claim. If you say that someone talks the talk but does not walk the walk, you mean that they do not act in a way that agrees with the things they say. For example: When it comes to recycling he talks the talk but he doesn’t walk the walk.