Country Dictionary

That's not a thing

Phrase used to denote frustration with or to dismiss a concept or notion that either

A.) Makes no sense
B.) Is not widely known
C.) Does not exist

Person 1: I heard you were sick, what do you have? Chicken pox? Measles? Armenian Bird Flu?
Person 2: Wha-? That's not a thing

Person 1: This new body lotion I have works by activating the fourth and third chakras
Person 2: That's not even a thing