Ain't is a contraction for am not, is not, are not, has not, and have not in the common English language vernacular. In some dialects ain't is also used as a contraction of do not, does not, and did not.
I ain’t going to the party.
by Which G.I. December 27, 2017
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When a person think what they did was funny or cute but in reality it was a fucking mess
Girl with bad hair: “yea my hair real cute right”

Other girl: “This ain’t it sis
by Yxung.K on instagram August 24, 2018
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Ain’t IS a word.The word “ain’t” has two words that make it a word, aren’t and isn’t here’s and example down below
Person: hey ain’t you the girl who kissed the floor ?

P.S. that was a dumb example please like
by Dani_picklesss January 26, 2020
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Refers to something that an individual would deem widely accepted or cool to show off, but in reality it just makes them look like a fucking idiot/weird.
Example 1:

Person 1: Strawberries on Pizza are to die for.
Person 2: This ain’t it Chief.

Example 2:

Person 1: Who’s excited for the new Teen Titans GO Movie??
Person 2: This ain’t it Chief.
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