ithyphallophobia

From Ancient Greek ἰθύφαλλος (ithúphallos) (from ἰθύς (ithús, “straight”), a variant of εὐθύς (euthús), + φαλλός (phallós, “penis”)) + English phobia.

ithyphallophobia (uncountable)

1. The fear of having or seeing an erect penis.
   • 2002 September 13, maf1029 [username], “Re: Homosexuals have phobias”, in alt.politics.homosexuality‎ (Usenet):

     So, do you use your violence fantasies to mask your medorthophobia, your ithyphallophobia, or your medomalacuphobia?

   • 2013, Tom Cutler, Slap and Tickle: The Unusual History of Sex and the People Who Have it‎, Constable, published 2012, →ISBN:

     (Nocturnal erections are probably good if you suffer from 'Ithyphallophobia', the morbid fear of seeing, having or thinking about an erect penis.)

   • 2013, Eric Jerome Dickey, Decadence‎, Dutton, →ISBN:

     “Mommy, I know that you don't suffer from ithyphallophobia, so you can stop pretending that you do.”