Just make him laugh, that’s all. You don’t need to hire a clown to do that (but now that I mentioned it, why not?). There are a lot of ways to make your boyfriend crack a smile – sending ridiculous pics that you found online, sharing jokes with corny punch lines, painting your face, just about anything that won’t get you killed. Even if your jokes fail, he will still appreciate the fact that you are trying to make him feel better instead of say shopping with your friends.