The first of the five ages of bovine. Followed by the Cream Age, Cheese Age, Milk Age & the Whey Age.
Whoa to you oh children of the beef tits; for once we dwelt in the butter age yet now we dwell in the age of whey.
by Amoebabadass January 10, 2018
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Butter age, referring to a girl that looks younger than she actually is.
Jack: Damn did you see Jenny?

Charlie: Yeah man she's a total butter age.

Jack: I know she looks 13, but she's 18, haha.
by Butter-Age January 27, 2014
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