"I went down the street to the 24-hour grocery. When I got there, the guy was locking the front door. I said, 'Hey, the sign says you're open 24 hours.' He said, 'Yes, but not in a row.'"

This quote by Steven Wright is a humorous take on the idea of 24-hour grocery stores. The speaker went to the store expecting it to be open, just to find the man locking the front door. When the speaker mentioned that the sign stated the store was open 24 hours, the guy replied that it was open 24 hours, but not in a row. This implies that the shop closes for an amount of time, even though it is promoted as being open 24 hours. This quote is an amusing method of mentioning that in some cases things are not always as they seem. It likewise serves as a pointer to constantly double-check prior to assuming something holds true.