Top Definition
the extremely slobbery act of and/or the giving of excrutiatingly good oral sensations
Boy 1 - "damn that bitch gives some amazing fallacio"
Boy 2 - "yeah, and so does her mom now i know where she gets it from"
by tooSHAY September 02, 2007
Sloppy logic; a wordplay on the term fellatio, "fallacio" refers to an argument so patently based on false premises and defended with fallacious thinking, even a fool would know it sucks.
"Your defense of your point, which consisted of ad-hominem and strawman arguments, demonizing, and refutation by ridicule, was an obvious example of fallacio."
by ChiRho888 October 19, 2013
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