1 definition by Kevin McCormick

Acronym which stands for Girls Are Dumb. It refers to the inherent lack of intelligence girls exhibit on a regular basis that guys are (for the most part) immune to.
Like the expletive "fuck" and other words, GAD can be used as many parts of speech.

Noun: "Mary drove 2 hours in the wrong direction before realizing it. What a gad."
Verb: "Dude, you're being illogical. Stop gadding it up."
Adjective: "This TV show sucks, it's real gaddy."
Expletive: "My sister can't figure out how to turn the TV on with the sound system. GAD!"
by Kevin McCormick September 18, 2006
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