Sacchan’s place with 〜んち

Grammar Explanation

三ツ星カラーズ » Volume 4 » Page 38

Sacchan and her friends decide to make a movie about the district they live in. They stop by Sacchan’s mother’s shop to film a scene.

“Next is my place! Kise Fruits. This is my mom.”
“Welcome to Kise Fruits.”

「うちのうち」 is contracted into 「うんち」.