create alias shower -> showering
Danbooru favors verbs in gerund form. Moreover, the word "shower" in this sense is vague and easily construed to mean shower installations rather than the act of taking a shower. This leads to rampant misuse of the tag: post #436196, post #1465989, post #2174521, post #2220137, post #2441383, post #2505248, post #2635745, and so on.
EDIT: The tag alias shower -> showering has been rejected by @Kikimaru.
Updated by DanbooruBot