I spoke with my wife and we decided to go with this shape, because we value substance over form.
With this, I could somehow manage to keep up appearances.
Hey, do you want to rub my butt-shaped belly?
The kanji and the word are exactly the same. That means they share meanings as well.
Since this word is made up of a single kanji, it should use the kun'yomi reading. You haven't learned this reading yet, so here's a mnemonic to help you:
You really want to eat food that's in neat shapes, so you decide to use a cutter (かた) on your cheese (ち) to make it a new shape. Square cheese is so boring. After you cut it up you have mouse shaped cheese! It just tastes better like that.