Whathuh
A combination of the word "what" and "huh." Generally used to express confusion.
<Person> So, I was down at the old house...
<Person2> Whathuh?
<Person> The old house. You know, the place where we saw those huge dogs.
<Person2> Oh.
<Person2> Whathuh?
<Person> The old house. You know, the place where we saw those huge dogs.
<Person2> Oh.