1 definition by grady hernandez

Drinking down a forty ounce alcoholic beverage to a desired level (typically the bottom of the cone), then topping off your forty with Mad Dog 20/20. The same concept as a brass monkey, but a lot more disgusting.
Jose: That beezy was on my dick last night!

Juan: Well no wonder, she had herself a rusty monkey
by grady hernandez October 14, 2012
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