Who Makes You Laugh?

My best friends are all really good at making laugh. Like full-hearted  laughs, not just those polite, or I-didn't-hear-you-but-I'll-laugh-to-seem-like-I-did laughs. I suppose the reason that they can make me truly laugh is because we know each other really well and we have common "funny topics". Those little inside jokes are also totally funny, and the fact that no one else can understand us just makes the whole thing funnier. However, it is sometimes quite rude and unwelcome to talk all about your inside jokes with your friend while being in a conversation with someone else who doesn't get your joke. At least in my opinion, it's very rude and extremely mean and exclusive. My friends also know the things that I would think are funny, just like how we know what type of songs and movies each other likes. Clumsy people also makes me laugh, because of how they always do things that were not deliberately funny, yet they're just so cute when they try to get there stuff together. I know it's mean to laugh in that situation, but I laugh in the kind way, because they're really cute and funny in a good way when they do that.