The act of eating all the cereal pieces out of your lucky charms and then downing all the marshmellows at once.
Im eating lucky charms. Im going for an Irish Rainbow Chug.
by tadpoleguy September 1, 2010
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performing oral on your female partner while she is having "that time of the month", then proceeding to make out with her.
some may find the irish rainbow kiss disguisting, but I find it has a rather tangy taste to it.
by everett Graves June 19, 2006
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