Tampon

Out all of the horrible things Bruce Wayne - aka Batman - had seen, this had to be the worst - which is saying a lot. This was going to be positively dreadful. He already knew it. From the moment he stepped into the store he knew he should've made one of the rookies do the task for him - cruel, but hey maybe they might actually knew what he/she was doing. What was his dreadful task?

Buy a tampon for Wonder Woman.
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Entry in this contest.
Word Count: 577
I do not claim to own any DC creation, or the invention of tampons. I only claim to own the plot. So don't steal. Thanks! :)