2. a misleading or unsound argument supporting an act which would be pleasurable for one's penis
3. deceptive, misleading, or false nature regarding one's penis, esp. size; erroneousness in relating facts regarding one's penis
4. In logic: any of various types of erroneous reasoning that render arguments supporting an act which would be pleasurable for one's penis logically unsound
He said he loved her, but it was only a phallicy.
All of his former hook-ups accused him of phallicy.
The most commonly used phallicy the fourth kind is "Everybody's doing it."