Why is the ponytail-wearing goo-goo-talking, simultaneously crying and laughing, possibly possessed, female student we see in porn such a fantasy for straignt men?

This character will not show up in so many porn flicks unless her appearance generates a lot of revenue. Note it is not not the sexy dominatrix or the slutty MILF that graces porn DVDs the most but this ponytail-wearing goo-goo-talking, simultaneously crying and laughing, possibly possessed, female student. How? Why?