She offered the man a bag of food. What she didn't realize is that man is worth millions of dollars.
Turns out it was actor Richard Gere, who was filming his next movie.
He was apparently extremely convincing in his role. People thought he was another homeless man on the street.
The actor stayed in character the whole time and ate the food the woman gave him.
The 64-year-old co-stars in the new film, "Time Out of Mind," with Kyra Sedgwick and Jena Malone.
This story was first reported by KGO-TV, KTRK's sister station in San Francisco.