Top definition
Wanting to or needing to consume a whole gallon of milk in a day or 2.
Steve and Jessica are so dang Milk Thirsty, ive just noticed my whole gallon is gone that i just bought 2 days ago!

That baby is so Milk Thirsty she just consumed the whole gallon in 2 days!

I think i might have a bowl of cereal.*opens fridge* damn i knew i shouldnt have invited them over they are Milk Thirsty.
by 351KingofAnnilation November 29, 2012
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