A great way to pass the time is to suggest that two random things are the same in Chinese. Here's an example. You're at work, people are talking about how they have to hurry to meet a deadline, or the project will fail. You pipe in with "Did you know that the Chinese character for deadline is the same as for fail?"
Huh. Pretty interesting and smart sounds. Kind of deep - I mean, why is that the case. Better go think about it.