Pronounced " eye-shit "

An acronym for "I said it so it's true".

An isisit is therefore the kind of person who justifies the truth of something on the basis that they said it.

This obviously goes way beyond circular reasoning because it usually comes with negative slurs against people who don't agree with the point of view of the person.
Bill: Obama is a racist liberal who wants to make our country a muslim communist state

Chuck: I don't think so. How can you say that?

Bill: Well, you're disagreeing so you're just like him. I don't want any of your commie libbie shit, so go live in some other country like Cuba or Iraq.

Chuck: Pish! You're just an isisit!
by izzywizzy May 29, 2010
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