If you’re trying to keep a straight face while you’re talking to someone, invest yourself more in the conversation. One way to do this is to ask the person questions. It’s also a good way to steer the conversation away from something you find funny.  For example, if the person you're speaking to has been telling you about their job, but then they veer off into a topic you find funny, try to ask them questions that get them back onto talk about their job. You can say things like "Tell me more about what sort of schooling you needed for your job," or "How did you get started in that field." If you have a hard time keeping a straight face when you're telling a joke or playing a game, practice ahead of time. Practice the joke over and over so you can keep your face straight when you tell it. You can also practice things to talk about during a game to distract yourself and keep a good poker face.  If you're trying to distract yourself during a game, talk about something completely unrelated to it. For example, if you're playing poker, don't talk about other poker games you've played. Instead, you can talk about what's going on at work or something that happened while you were at the store. People you speak to will feel validated if you can back up what they’re saying with your own experiences. Thinking about your own past gets your mind off the present and helps you control your face. For example, if someone is telling you an embarrassing story that you can tell hurts them a bit, share your own embarrassing story. It not only stops you from laughing, it can help the other person feel better about their own experience.
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