"Friends don't let friends do silly things alone."
If you are feeling a little low on one day, one person can always understand that without passing any hint and then to lift the mood, here they would come and say, 'Okay,tell me later but first share a hug, we both will feel better' and half of the problem seems to get solved. Somebody has once said to me that friendship is the best relationship in any individual's life which they could cherish for a lifetime and treasure it. One can have the random discussions, stupidest talks, hearty laughs only with their friends.They are the agony aunts to you in the hour of need but not the gossiping mongrels when you are somewhat weak. They make a lot of fun of you at your face but never make you a laughing stock out in the public. You can count on them and they'll be there for you before you finish your counting.
I believe when you have your friends around, no one needs an excuse to party, its just that their presence is enough to make a reason to have a party and why not, Yaari/Dosti in itself is a big thing for celebration that too celebrate responsibly because it drives you crazy, mad but not into being a fool.
Disclaimer: This post is intended for audience above 25 years.