What embarrassing things have you encountered on the bus?

When I was most embarrassed, I stood and answered the phone. Suddenly, the bus braked, and I rushed forward and bumped into an uncle's arm. Even the mobile phone has to straighten the glasses and pick up the books in the shoulder socket, but the driver is driving again. I was embarrassed, and that uncle helped me pick up my book. I am very grateful to him. At this time, an aunt sitting next to me offered her seat to me. ?