How can a girl laugh at her gracefully without embarrassment when she falls?

You can say "be careful" or something, and then smile appropriately and perfunctory. This way is the most convenient. If you want to know more, you should pay attention to TPO. For example, if you are in a hurry to go to a place you expect, you can make a fuss about the other person's expectation or what the destination should do. You can also play according to the season and season; You can also make a joke on some occasions to divert others' attention, relieve embarrassment and so on. This complicated way depends on the cultural quality and on-the-spot reaction of the parties. Besides words, don't forget to pay attention to behavior. After all, the perfect harmony between words and actions is an elegant joke. By the way, I almost forgot to tell the best jokes and help people stand up.

If you really can't do it, just hold a sincere heart and let your feelings take you. True feelings are more elegant than artificial actions.