Mick didn't have a clue what he was in for when he found the shiny, fancy medallion laying on the ground. He picked it up, and was so engrossed looking at it that he didn't notice the mouse skittering by him. He stepped back, the mouse's tail brushing his leg.
That's when it happened, of course. Mickey suddenly found himself shrinking fast. He dropped the medallion as his clothes came tumbling down on top of him. His nose twitched, and he felt stubble of a moustache below his nose (actually they were new mouse whiskers). His butt wiggled strangely (actually that was his new mouse tail)... and his skin felt strangely warm and fuzzy all over. He climbed through the clothing, in shock, and he heard a squeaking sound. He soon realized it was him.
"Hey, you! Over here."
Mickey the mouse looked over and saw another mouse. It sat up on its haunches for a moment, and nonechalantly commanded, "Follow me, this way." He scurried off.
You're amazed by these changes, and imagine you MUST be dreaming. After all, you can't be a mouse, there's already a mouse named Mickey, and if you were Mickey too, that might constitute copyright infringement! But humoring this bizarre dream, you follow the mouse into a strange... well, you don't know what it is, but for lack of a better word, a strange passage.
"Welcome to the 42nd dimension. I'm Benji Mouse," the mouse in front of you tells you cheerfully. "Care for a pint of bitter?" He hands you the drink, which seems extremly well suited to your size, considering you're a mouse now and you could drown in a pint... but then this is the 42nd dimension, you remind yourself. Whatever that is.
"Drink up," Benji Mouse encourages you. "it will make things easier to take.
You gulp it down. It was quite satisfying. You lick your whiskers. "So, why am I having this strange dream? Is this revenge for the mouse traps I put out last winter?"
Benji got an annoyed look. "You know, Mortimer Mouse was a good friend of mine. A real shame what you did to him."
You start to get scared, thinking of the mouse you caught and so thoughtlessly tossed away like garbage. "Well... well, he shouldn't have been breaking and entering!" You retort.
Benji consideres. "You have it all backwards, but I see how that makes sense from your previous 'human' perspective. No harm done though, we transdimensional beings are hard to kill, what you did was only like lobbing off his fingernail. He's grown it back now."
You sigh with relief, feeling off the hook.
"You're here because I'm lonely. I'm the only one assigned to this zoo, and sometimes I'd like a little company."
"Oh," you respond. This is a very curious dream indeed.
"I was hoping for a female," Benji sighed. "But you're cute too, and fortunately I'm versitile."