Do not drop means kick it harder, throw it further.
UPS used to say they had a 6ft drop test. All boxes must withstand a direct drop from a height of 6 ft. I know in high school teh good paying job was catching UPS boxes from the plane at the airport. You started at around 3AM and worked til around 7AM. You then went to school. I will assure you many boxes got dropped. A bunch of hung-over high school kids were not that great at catching. One of my friends did it and moved his way up to become a driver. He retired and bought a cafe that he turned into a bar. His son who was a student of mine, also started as a handler with UPS. He also moved his way up and is now my driver.