換尿布還有指定曲Mummy must sing I'm a little teapot as changing his diaper

Whenever I change Martin's diaper I either give something to let him hold/play or I sing a song. However, today when I sang 'two little black birds sitting on the wall.....', Martin stopped me and said 'pot pot'(I'm a little teapot). Gee....he ordered me to sing the song he wanted. 臭小子就會欺負媽咪.