Once you'd past the centre of the Earth you'd seem to be digging upwards (due to the gravitational pull from the centre) so you'd come out the right way up.
Before I say anything about this I'd like to say I think the earth is round and really couldn't give two shits if anyone said it wasn't, but I saw this little snippet and something caught my attention. I'm no theorist, scientist, nor am I even very smart for that matter, but something about this struck me as odd.
Now, theoretically speaking, as you stated if one was to dig through the center of the Earth (which we know is impossible to do but just for you stupid fucks who will say I think its possible.. well, stop being such faggots), once you passed the center you would seem to be digging upwards. At this point, which we'll reference to as the "gravitational flip" because I really don't know what the fuck else to call it, what would happen beneath one's feet? Since gravity would flip and they would be digging upwards towards the "ceiling", theoretically the ground beneath them would be their anchor on which gravity is forcing them - but they have dug away that ground. Would they freefall all the way back the the original surface, or would they just keep bouncing off the "gravitational flip" and just float right up fucked river? Theoretic thought always bugs me, such as time travel, and this one gets me as well. What would happen if you dug to and hit the gravitational flip with no ground beneath you? When you hit that point, what's down becomes up, is that not correct? Well, if you hit that point, down would be nothing but an empty void equaling the radius of the earth (which you have dug through). Can anyone shed some light on this? My head hurts.