I wouldn't be laughing at the kid's anguished cries if it didn't have the "oh" part. That one syllable makes it sound funny to me.

Remember the grim realization about 1984-85 when you suddenly discovered that between 12 pm and 8 pm, there was Little House on the Prairie playing on at least one channel? The Challenger exploded and yet somebody was still playing Little House on the Prairie.

...or, as me and other 8-10 year old boys referred to it, "Little House Full Of Fairies".