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A Spicy MacGregor is essentially giving head (or sometimes rimming) with an irritant, such as after eating spicy foods.
Constructed in the fashion of other colourful 'ethnic' innuendos, such as Dirty Sanchez and Mexican Lipstick.Coined in the webcomic Lucid TV.
"So, yeah, that's pretty much how you do a Spicy MacGregor."
by Rhademanthus December 18, 2007