My sister is fat

A young man from Poland and his mother called us in Skypeland. Neither of them spoke much English, so we wondered why they would call someone in Japan, blindly and expect them to speak Polish.

However, we were able to communicate a little. He said he was studying sports, including soccer ("football") and volleyball, and said he wanted to be a teacher, and teach sports in school. At first we thought he was in college and then he told us he was 14 years old.

He told us that he has a cat and a dog, both 11 years old. He said the cat was very fat and the dog was a small dog. He said he also has a sister, "My sister is 26. She is beauty. She is big and fat. She eats all". Ah I see...his mother was laughing in the background during all this.