I found this interesting theory in the Beavis and Butthead group.
****************************************************** Jose *elephanto* Pendejo ([email]) Re: Daria's Sex Life Newsgroups:alt.tv.beavis-n-butthead 1998/04/14
Maybe Dariah saw an elephant naked, when she was a small child, and this scared her into thinking that men would be this size, and would hurt her if she was to be intimate with them. This could be why she is attracted to women only.
Jose "elephanto" Pendejo Jose's Casa De Los Elephantos