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2.
The act of grabbing an elderly woman's teat and shaking it uncontrollably until rotten milk has been produced and made ready for bottling. Chill and serve.
Guy 1: "I went to visit my grandmother in the nursing home yesterday."

Guy 2: " My grandma passed away there last year."

Guy 1: "Yeah, they were out of soda so I settled on a good ol' Dusty Milk Shake."
by Johny12345 March 03, 2012
 
1.
A BLOW JOB FROM YOUR FRIENDS MOM
DUSTY MILK SHAKE FROM YOUR MOM IS BETTER THEN YOUR SISTER.
by BFAB432 August 22, 2008