作词 : 에이리스트
Knock, knock, knock.
Is it Mommy?
Knock, knock, knock.
Who is it? Who is it?
Hey kids! Mommy’s here.
Open, open, open the door.

Knock, knock, knock.
Is it Mommy?
Knock, knock, knock.
Who is it? Who is it?
Hey kids! Mommy’s here.
Open, open, open the door.