When a friend gives you a sword, you can reply humorously: "Wow! Is this a boss-level life for me? I'm ready to conquer the world!" Or you can also say: "Thank you! The sword can be used to protect me.

The treasures in life, like good food and good friends!” Such humorous replies can add some joy and humor.

Of course, the humor level of your specific reply also needs to be determined based on the relationship and mutual understanding between you and your friend. Appropriate expression of your own personality and sense of humor will make the reply more lively and interesting.