Odd sound for a chair to make

Rosie, Gaby and I were talking. Gaby was sitting in her chair. Suddenly her chair goes down and this sound like a cat meowing was heard. All three of us looked at eachother and we are like "wtf??"

Gaby starts talking between her legs "are you hungry kitty." We all started laughing. Then in her best Cartman voice she said "bad kitty!" LOL