/r/femcelgrippysockjail is a shitposting subreddit for self-described femcels. 
Posts on the subreddit are usually frivolous and typically revolve around hating on moids, but infighting often breaks out over petty things. One such example happened recently, when a new user posted an image mocking a 5'3'' man who tried to ask her out in public:
Initially, it was well-received... until it became apparent that the OP was not being ironic at all and was, in fact, completely earnest in her supercilious contempt for moidlets (despite admitting to being short herself) - at which point, angry posts directed at her quickly commenced. Some simply called her out for her snide, hypocritical meanness, while others accused her of being an undercover moid trying to instigate misogyny or even run a psyop (and there's lots of weird hornyposting about pegging short men as well).
Just a few of the highlights:
It goes on and on and on well beyond these screencaps, of course - you can dig through the thread yourself if you want more. OP later deleted her account, as you can see from the screenshots above. 
You have to give femcels credit for one thing, at least: they are, by far, the funniest -cels in existence. 
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All Guardsmen for me
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I'm not fully convinced you're not a targeted LLM or Aevann really did manage to collate a very specific kind of r-slur all in one place
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