An elderly woman is suing a San Francisco McDonald's for negligence after she allegedly suffered severe burns from a spilled cup of coffee. https://youtu.be/pCkL9UlmCOE?si=Kw14cU7Ne7mWa8VK In 1992, Stella Liebeck spilled scalding McDonald's coffee in her lap and later sued the company, attracting a flood of negative attention. Mable Childress, in her 80s, claims that the lid…