Why do magicians pull rabbits out of hats?
Well, rabbits are docile compared to other animals.
Also, rabbits are cute.
Finally, the parallel universe to which your hat’s transdimensional portal connects is full of cute, docile rabbits.
That’s why we call it The Bunnyverse.
So, whenever you stick your hand into your hat, it doesn’t take long for you to grab a rabbit and pull it into our universe.
Just remember to put the rabbit back. Transdimensional mass imbalance might lead to a space-time rift.
Which will explode and kill you, the audience, and everyone on earth.
Including the rabbit.