The mirror shimmered and became a portal; a mousehole in the space-time continuum. The Two and 4T went through cautiously side by side, following the scent of a cheesy joke. They escaped by a whisker as the conjunctions disjuncted and the mousehole closed suddenly behind them.
They found themselves in a rather weird place. There seemed to be a lot of empty people about and a lot of broken barrels that smelled of beer, which mice do not care for. Nearby, however, was a gigantic paw that smelled of machine oil and that was certainly worth sniffing. It seemed to have a worm-like attachment that tasted of boots and soap and that was definitely worth gnawing, so they gnawed it. Because that's what you do. It's a mouse thing.
Strangely, the worm thing turned out to be hollow and inside was a whole lot of wet stuff that tasted of fish. It came gushing out rather suddenly and they both had to jump several inches in the air to avoid getting wetfur, which is a bad thing for a mouse to get. There was far too much of the fish juice to drink, so they crouched on top of the giant paw and watched with mild interest as it puddled on the ground. After a while, the giant paw began to quiver, as if it was trying to do something and couldn't and then the fish juice stopped coming out.
"Let's try running up this wooden leg and see if there are any nest holes up there," suggested 4T. So they did. There weren't any nice holes, but there was a promising piece of parchment that could be chewed up to make bedding, if you didn't mind the taste of squid ink, the gritty taste of diamond dust and the way it made your fur stand on end.
Somewhere very high up in the sky, a mad voice that was too low-pitched to hear but made your whiskers vibrate rather unpleasantly, said "WTF?"