Well I don't know if this is a 'bad experience' but it was certainly funny!
When my mom comes home and parks in the garage, she often sits in the car and organizes her handbag, her to-do list, etc. One day, after coming home from work she fell asleep in the car. (guess she had a long day at work)
To be honest, Dad and I weren't too worried, as we know she likes to spend extra time in the car. Then my neighbour across the road saw my mom in the car and panicked. She thought that my mother was dying or something. (The neighbour is a pretty strange person, to be honest) She then ran to our house (bypassing the car! she could've knocked on the window or something) and knocked on the door, hollering that something was wrong.
When we ran out and came to the car, my mother had just woken up, due to all the noise. My neighbour was so embarrassed, but we certainly found it funny!