How is menstruating like Christmas?

My usual feminine product of choice not being stocked by my supermarket, I went with something else. This one has little pearls of questionable wisdom printed on the packaging, presumably so you can do something while in the loo other than cursing God for making you female.

"If the population of China walked past you in single file the line would never end because of the rate of reproduction."

Except that if they're walking past you in single file they're hardly in any sort of position (pardon the pun) to be reproducing, are they? But one doesn't really get anywhere arguing with that sort of facile hygienic wisdom. It's like pointing out that the jokes in Christmas crackers really aren't funny.