Regarding a recent mystery: I have a younger sister (50s), and apparently she fell and broke her leg. Was it minor? Was she severely hurt? I had no idea, and then my sister said she wouldn't be attending an Araki family celebration, so I called her and asked, "Is your leg okay?" and my sister responded, "Ufu." Just that. What in the world? Why couldn't she give me an answer? This sister has a daughter in her 20s, so I asked her, "How is your mom's leg doing?" and she responded, "Ufu." Just that. Are they telling me to use my imagination to discern the hidden meaning behind "Ufu?" What is "Ufu"?