What does it mean to be Phallicsexual.  Erotic thoughts draw you to penis.  Lust is a hard cock, standing alone.  You need to grip its shaft and feel its soft head on your lips.  Penis's veins bulge and its scrotum is inviting.

Phallicsexuality means your lust has always been about penis.  You may have wanted to put your mouth on a penis, or just wanted to hear cock, dick, penis, spoken to you, during youthful masturbation fantasies.  Now as an adult you know penis is what your libido centers around.  Lustful thoughts always go to penis.  When you want to have sex, you want to have sex with penis.

Penis as a sexuality is not as uncommon as you might think.   Many men, and some women, are sexually focused on penis.  The length of penis, its shaft, standing erect out from the crotch.  The smooth curves of the soft head, sometimes gently coated in foreskin.  And of course the prejaculate and semen it releases.  

If these things occupy your mind during masturbation.  If your sexual encounters are sex with penis.  Then you are Phallicsexual.