photo #8173289

I am a die hard Flat Earther but I gotta admit, this new information has shaken me. The science presented in this meme is rock solid (No pun intended) But I'm struggling to see how this scientifically makes sense in a Flat Earth model. I mean if we're on a stationary disc and there is nothing underneath, how would an impact on one side cause the other side to pop out like that? It could I guess, but it wouldn't be in Austrailia. We would have to somehow get past the ice wall and then go underneath the disc to see it. I've watched as many Youtube videos as I could, but none of them addressed this. But I need answers so I don't look like an idiot when my Gulli-ball friend inevitably calls me out. Can someone smarter than me please explain this?