in short for crackpot theory.

1. an idea or theory that may be personally held by a person and has absolutely no basis or strong evidence to support it.
2. an idea or theory that is very extensive and ridiculous in reality regardless of evidence, as if the person presenting the idea/theory was "on crack".
1.

A: Okay so I have this crack theory that Sans from Undertale is actually Sans-
B: What?
A: What?

2.
A: an extensive explanation to the theory that all the Adam Sandler movies are connected
B: Wow... now that's a crack theory when I see one. What the fuck.
by Eurasian_ November 9, 2021
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the crack theory is a theory that states that it is not sexy to see an ass crack no matter who it is on, and the only time crack is sexy is when cheeks are involved
yo that girl has a fat ass, but that crack aint workin for me
by Da XCellent July 11, 2004
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