The Mimic gets anorexia...........

I feed the Mimic an entire Planet.

The planet is the Planet of the Tarrasques. It is now the size of a planet, and has a population of Tarrasque servants that it has as thralls.

I feed the mimic the Weave.

The mimic spits it out and an even worse Spell Plague comes about. Also Mystra dies yet again...

I feed the mimic a half baked homebrew campaign from over three years ago.

It doesn't like the taste of digital documents and burnt paper, so it stores it in its cheek.

I feed it Drizzt Do'Urden.

It spits out Jarlaxle who fixes his hat and walks away.

I feed it an angry kobold.

Its Tiamat aspect refuses to do this, and uses all the power Tiamat has left to split the mimic from Tiamat, causing the Mimic to no longer be the goddess of evil dragons.

I feed it the Tears of Selune, starting with the the Rock of Bral.

It happily eats the tears, turning back into a treasure chest

I feed the mimic a prosthetic leg

The mimic wrenches off your kneecaps and applies the prosthetic leg onto you.

I feed it 69420 (nice) cp.

It spits out 6942 SP. It’s sure you will understand.

I feed the mimic... An alternate universe watching the sky eating Wild Magic Sorcerers eating the mind flayer eating the commoner with the stats of a tarrasque eating a living pineapple sneaking out planets in the sky that is pink and has a pet black bear wearing a top hat that is being eaten by Grumpy Cat

It spits up everything cause it ate all of that and was over stuffed

I feed it a lightfoot Halfling that ate a salad. Time to go on a diet there mimic.

It nibbles at the Halfling, then spits up a pizza box with a full pizza in it. Seems to not want to go on a diet...

I feed the mimic a saxophone so it can learn how to do music

It plays the saxophone very well.

I feed the mimic a business card to an orchestra so it learn to play better.

It pulls out a note pad and a pen and writes in draconic "go to orchestra Thursday for lesson".

I feed the mimc a piccolo flute.

It spits up a pickled flute.

I feed it a tomato.

The mimic greedily eats the tomato, and spitting out a card that asks, “Is a tomato a fruit or vegetable?” You are instantly compelled to search forever until you find the answer.

I feed the mimic a video game disk for Legend of Zelda: Breath of the Wild

It spits out a Wii U

I feed it Undertale

Okay, it now is pixilated. (which is a real D&D condition)

(It is a fruit, so I'm back now)

I feed it a meme.

It once again asks you for your financial support.

I feed it the entire town of Waterdeep.

It transforms into Undermountain, the dungeon of the mad mage. It spits out everyone else from Waterdeep, because it wants people to explore inside of it.

I feed it a Zone of Truth

It takes out a whiteboard and writes "i cheated on my gf :("

I feed it Asmodeus.