"Who stamped on [your/her/his] goldfish?" The alternative to 'who pissed on your chips' that's so ridiculously horrible you can't help but laugh. It's also less soggy sounding.
"Clam bake" Like a sausage fest but y'know, with women. Mostly used to describe my own fiction when I forget to put male characters in.
#FeministRage Sometimes someone says something so offensive you couldn't even list everything that was wrong with it, let alone fit it into 140 characters. Happily #FeministRage lets everyone know you're pissed off without eating up your word limit.
#MorriganDisapproves What's worse than some randomer off Twitter disagreeing with you? The disapproval of a fictional apostate of course. Not only does she have the confidence necessary to wear a flimsy scarf as a shirt (and you need confidence for a really withering put down), she can also drain the life force of people who disagree with her.
#LearnToSpell Like the above but meant to combat bad spelling/grammar instead of misogyny.
Fifty Shades of Greyjoy Basically it's what would have happened if Esgred was who she said she was. It's cute because Theon thinks he's Christian Grey.*
It might also look something like this:
*Admittedly Fifty Shades of Greyjoy becomes less funny when you know about the stuff that goes down with the Boltons.
** Or possibly funnier, if you're a socipath.