"Pouting Mouth". You say your mouth beeps, beep, beep, beep, beep, beep, and you will come. You say beep, beep, beep, beep, beep, beep, and the flowers will bloom. The naughty music that keeps beeping is called "Mouth Beep". "Mouth Toot" is a song written by Yu Hengfeng/Wang Zi, composed by Yu Hengfeng, and sung by Liu Zixuan.