The bullet flies through the portal. You don't see where it goes.
And then you step through the portal and do see where it went. It hit a wall and ricocheted. And hit you in the face. You're now extra-handsome and wearing another layer of snappy clothes.
Which you quickly realize is for the better, as looking around, you see that you are in a frozen wasteland, minus the "wasteland" part. You see children playing, people eating lunch together, and other things that would have been normal on your own Earth, except for the permafrost.
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