Having A Rubber Duck Can Make You Happy Enter your number to get our free mobile app So it's nice when we can get a pleasant distraction in the middle of the week. Today is "National Rubber Ducky Day" because Ernie from Seasame Street said the toy's birthday was on January 13th. He loved the duck so much that he always had it with him when it was time for a bath. In fact, Ernie loved it so much that he would sing about it. Do you remember "Rubber ducky, you're the one. You make bath time lots of fun. Rubber ducky I'm awfully fond of you." He wasn't the only one either, we loved it too. In fact, the Rubber Duckie song got as high as number 16 on the Billboard charts in 1970.