I guess you could count like the "Why do some guys not watch porn? Is it b/c their dick is small?" (posted by a guy) or the "Why are all guys pussies?" (posted by a gender troll) oh! Or the "We were at the skate park and bored so we kicked boys in the nuts lol" troll.
But, I've flagged stuff about men viciously beating and raping women, guys who were definitely serious about hating and wanting to hurt and rape women in any way, men who harassed women and girls, guys threatening to stalk girls and come to the girls houses to "teach her a lesson" and so much more.
Guy version of sexism is stupid boys trying to make fun of them and trolls. Girls have to worry about serious bodily harm, harassment, and stupid trolling on top of it. So I guess if other guys making fun of guys is misandry, there's that.
It exists in certain parts with specific users. It's perfectly acceptable to go on long rants about how horrible men are in various ways, yet the reverse is not accepted here. If you try disputing what certain people claim, or bring up a point about women without being offensive, then out come the buzzwords, memes, insults and multiple people yelling at you. I came here thinking this site was a neutral place for guys and girls to understand each other, instead I found misandry and lots of arguing. The people that actually do try to be decent here are shouted down, and that goes for both genders.