Disappointing moment.

Last night I made Hillary sing the Elf song from "Open Season" to me. These are the lyrics:

Once there was a magical elf who lived in a rainbow tree
He lived downstairs from a flatulent dwarf who was constantly having to pee.
One day the elf could take no more and he went and banged on the rude dawf's door.
And what do you know they both were suddenly married.

This song makes me laugh until I cry. It is especially funny when Hillary sings it to me. So I was giggling to tears, making her sing this song to me over and over (at least 7 times...) again and then this dialogue took place:

Me: " Do you know who I think of when I think of dwarfs?"
Hillary "No."
Me "That old guy from Lord of the Rings, Dumbledorf."
Hillary "What are you talking about?"
Me: "Well I know that it is spelled differently but y'know, dwarf and dorf, they sound exactly the same."
Hillary: (hysterical laughter and belittling voice) "You mean DumbleDORE from Harry Potter?!"

A moment of extreme confusion took place at this point. I now have nothing to relate to dwarfs.