This person is one of the most important people in your life. No matter what type of mood you're in or what you're talking about, somehow the two of you always find something to laugh about. Curling up into the fetal position dying of laughter is a daily occurance. No matter what you're talking about, something funny always comes out of it.
"A day without laughter is a day wasted." -Charlie Chaplin
These types of friendships are the best. You balance each other out in a way that doesn't happen with any of your other friends. You also understand each other more than anyone else which is why you are always laughing because you know exactly what will make the other laugh. Sometimes all you have to do is give your friend a certain look and you're instantly laughing. You have the same sense of humor which makes spending time with them that much more hilarious.
You could have had the worst day of your life but once you spend time with this person, you forget about everything that seems to be going wrong. They make you forget about it all once you start laughing. They make you laugh when all you want to do is cry and when you think you're never going to smile again, they are there to prove you wrong.
You don't need to worry about being judged by this person because that's just not in their nature. They may laugh at the weird things you do but they never judge you for it. They laugh at how ridiculous you can be sometimes and vise versa. You can literally tell them anything knowing that it won't make them think of you any differently.
They make you forget about all your worries and everything that is stressing you out because they remind you that life shouldn't be taken so seriously. This person is one of the most important people in your life. So, if you have someone like this, take the time to appreciate them because they are more rare than you think.