Used as an exclamation when noting an obvious or
moronic error in judgment. Usually suggesting complete unworkability. Also used to designate a
situation one tries to take advantage of, where there is no actual advantage to be had.
#1: "I really thought my new pet snake and my
hamster would get along. Well, I guess you can't milk a horse."
#2: Jerry - "So I tried to
milk this horse and well... you know what they say: 'You can't milk a horse'."
#3: Fred - "I just tried to hit on Nancy at her ex's funeral, but
ya can't milk a horse."
#4: "I invested $8,000,000 on the new line of Pogs, but goddam: Ya can't milk a horse!"