It became popular when some users started spamming it across the profiles of newly registered schloggers about a couple of months ago. Can't give many details, but as long as I've been aware of this tradition I've been a part of the hymen defender team.
That isn't true, xis. I for one am a cisgender, Jewish man. I'm sorry if my existence threatens this safe space of yours, my beautiful trans QVEEN. Fear not, I shall protect you all to the best of my ability.