Top Definition
1. Any person, place, or thing which bears resembalance to a wang.
2. Any act done in a manner which, similarily, somehow bears resembalance to a wang.
1. Person one: Dude, that's quite the phallacious hat you have on today.
Person two: Thank you, old chap.

2. Person one: Man, that was the most phallacious backflip I have ever seen.
Person two: Asshole, shut the hell up, I can't help it. You should fuck a cat.
by renegademaster June 25, 2005
A word describing the types of egomaniacal lies men will tell in order to get attention/sex.
His claim to have extensive knowledge about wine, philosophy and Italian sports cars is totally phallacious.
by Zagaloo November 25, 2009

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