That almost happen to me as I was entering my car back from shopping. The pack of cigarettes was empty, hard cover, and flattened by many cars parking over it. And somehow I stepped on it, and felt my left leg sliding; thankfully I was already 3 inches over my car seat. No harm done.
But I looked at the pack, thought about the smoker who discarded the empty pack there, and thought, he/she would have been so much better if they did ....
this instead.
Then, I got out of the car, picked it up, and took it back to the trash...where it belongs.
Don't fall over a Pall Mall...