Zippers work better if you rub candle wax on them.
The worldwide, 24-hour a day rate of zipper production is 28 miles per hour (45 kph).
I found the picture below as public domain on Wikimedia Commons. It didn’t occur to me at the time, but some people might consider this image as suggestive. Do you feel it is suggestive? Should it be replaced with something more innocent?