Logical Phallusy 

A clearly defined error in reasoning used to support or refute an argument about sexual prowess.

The assumption that having a bigger and/or more powerful car makes you a bigger and/or more powerful man is a logical phallusy.

Logical Phallusy by Alexandra Stuart April 7, 2008

Logical Phallusy 

An error in judgment caused by a man thinking with his penis instead of his brain.

I committd a logical phallusy in sleeping within that huge vagina, as now I can never escape from it.

Logical Phallusy by Martha Nose October 23, 2007

Logical Phallusy 

Being a dick when you're justified in being a dick.

1: Dude did you see John punch that guy in the throat?
2: Yeah, but he had it coming, he dissed John's mom.
1: Hmm, that's true. I guess John committed a logical phallusy.

Logical Phallusy by Zhaadsquad August 6, 2014