I could give you the short answer, but it wouldn't give them any sort of justice, or be as fun to explain. Like you said, they are legendary; anyone who played 4U multi knows about them, because they were THAT prevalent. So this seems like a good time to sperg out about them, because they were so wrong in so many ways it was equally amazing and horrifying to behold.
I will first refer you to this post , my dear froganon, for these are the words that remain burned into our brains even to this day. The Gen babbies are lucky; they've been spared, now that anyone can press the B button to get a mount. But for us, the innumerable French Shitters that populated generation Big Guy will never, nay COULD never be forgotten.
It all started with the mounting mechanic. A neat gimmick, and I personally think it suits the MH series (unlike broken ass hunter arts). For the most part it was fairly balanced out, what with ledges only being in certain locations. You had to either plan for a jump, or take it in the spur of the moment, which suited the epicness of hunting big monsters.
But then you had the insect glave. It was a unique weapon in a lot of ways, but in 4U it really shined with its strategic (but risky) mounting vault. attacking with normal combos, while choosing your moment to vault and topple was how you got gud and played well with other team mates.
But for some reason that I still don't really understand, and I don't think anyone else understood, was the inexplicable and inextricable captivation of the insect glave to the French player base. And when they came together, it was always an absolute disaster, and people in the room could smell it brewing before the hunt even began.
I will now describe to you the anatomy of the French Shitter:
In the Hall, they only said two things:
In the Hunt, they only said two things:
It was easy to get mounts early game. Anyone could score at least one in the first village missions. But if you can just get free mounts with the insect glave, why wouldn't you just use the mount attack until it worked?
This frame of mind combined with the insect glave's spammable vault move created the triple-cart abomination that we all feared to play with, and still do even now.
The problem was, monsters didn't like being mounted in higher rank missions, especially because 4U was the game of the Sanic fast teleports-behind-you fuckers that refused to sit still for 2 seconds. In most cases, the hang time of the glave vault left you open to all sorts of shit, making it even more difficult to pull off.
But the French Shitters refused to learn. They had something good going, and they refused to give it up. And we all suffered for it.
Name any monster, doing any kind of attack, no matter how telegraphed - I've seen a baguette launch himself headfirst into it. Tetsucabra's boulder roll, Rathian's tail swipe, Brachi's ora ora, Rajang's laser rape, you name it fam. For every star in the sky there's a frog who incinerated himself in Shaggy's explosive fuck-you breath.
And if they actually somehow landed it, actually getting the mount,
They'd mash the fucking buttons until they were thrown off.
Again and again and again, without fail.
A single French player could accomplish what even the most bullshit ultra apex monsters could not: make an entire room of skilled hunters, who had been steadily and happily charging right into the fray together, disappear.
This may seem like the over-exaggerations of a super autist, but keep in mind even the fucking redditors started noticing the trend. The few threads that stayed up were always filled with apologist white knights and all sorts of damage control, but those of us who played knew. Just like you know now.
Carry this information with you. Because one day, when a new MH comes out, stripped of the retarded aerial mechanics that all hunters can use now, you might see a player that reminds you of these very words. And for the sake of that room I hope you're the host. Because if you are, you can kick that shitter out as fast as humanly possible, and continue having an enjoyable hunting experience.
Otherwise, the room might just end up a bread bowl.