To enjoy oneself by spending extravagantly or engaging in lively, extravagant activities

मस्त होकर जीवन का आनंद लेना

English Usage: "We're going to live it up this weekend by going to a big concert."

Hindi Usage: "हम इस सप्ताहांत मस्ती करेंगे और एक बड़े कंसर्ट में जाएंगे।"