Methamphetamine (crank, speed). Describes the gag reflex triggered by the extreme burning sensation of the nasal passages when the drug is snorted, and the very bitter taste as it drains down the back of the throat.
The character 'Pooh-Bear' in the movie "The Salton Sea" had to have his nose surgically removed because he snorted too much gack.
by Anonymous July 13, 2003

I know mac dizzle he is the gayest guy I know so if you are trying to insult someone call them a mac dizzle. I mean the guy looked up pink shirts on the internet in the middle of class for crying out loud.
by Anonymous March 01, 2005

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