Both of you are on the verge of crying : instead of human forms, or anything remotely handy, you stare back at what seems to be two tiny rodents sitting side-by-side. One sporting a darker grey shade, and the other one brown.
Mice.
They're so small, you do wonder if the two of you might have the possibility to use the mirrors ever again.
You don't have time to think about it, however, as you shrink quite fastly. It surprises your rabbit buddy, to the point of making trip, fall and land on his back next to you.
Your size keeps on decreasing, and a quick glance shows you that you are not even halfway past the rim and frame of this cursed mirror. The same happen to your friend, and he soon matches your height.
Then, it stops.
Your once beautiful feline body itches like fire, entirely contorting into a much simpler form. You can't quite see your changes - but rather, feel them. You decide instead to observe your partner that is dealing with the same issues.
His rabbit form gets closer and closer to the ground, in a truer quadrupled fashion. He also elongates to a certain extend, looking sleek and slender, while his coat gets darker and darker into somber grey fur. His ears regress quite significantly, loosing all of their length before rounding up a little bit, and his puff tail, in a compensating fit, shoots out by a large amount of inches behind him. His paws thin out into claws, sporting both his forelegs and hindlegs, as they do reshape into quadrupled legs that are more appropriate for rodents.
With that, only the face remains. Bigger whiskers drop from his snout, which lengthens farther away, and his dentition seems to accommodate the same, as you get a glimpse of his new set of teeth.
At the same time, you almost change the same way as him : you too get closer to the ground, gets warmer thanks to your new coat of fur - which presumably is brown - , feel a bit rounder in terms of shape rather than thinner, wiggle your now much dexterous paws and slender tail, and even see the beginning of your long muzzle appear into your peripheral vision.
However, you feel your belly churning with extra stuff appearing out of nowhere. But it doesn't stop here : as you feel your hips getting slightly broader and your manhood behaving quite strangely, you apprehend with confusion this new chunk of information.
And soon, the changes stop, as quick as they had been triggered.
Your pal looks at you, then himself, totally bliss and shocked by what happened.
" Oh, no... " he manages to spout out from a higher-pitched voice. " This isn't good at all ! "
He then recalls something, and looks at you again. Right before weirdly looking embarrassed for you.
" What ? " you squeak, uncertain, wondering why your voice has a much stranger pitch, even considering your friend's.
" You might want to look at yourself. Just sayin'. "
You cock your head down, and with a not-that-unexpected surprise, you indeed observe that you've become a member of the opposite gender. A female brown mouse.
You cringe at the meaning of this revelation. Not only you became a frail, helpless rodent, but you will still need to search another mirror in order to regain manhood.
Speaking of mirrors, you wheel around. There's no way you and him will be able to reach them, even if you climbed on each other.
You'll have to think about another solution for that matter.