Isn't

Isn't is not not, isn't is isn't.

When it isn't

It isn't isn't unless it isn't. When it is, it is. It isn't on Thursdays. It isn't wedding cake. It isn't a robotic laxative. It isn't a ruby. It isn't Reince Priebus. It isn't a utopia.

When it happens, other things won't. These are the things that isn't... um, aren't.

No it isn't

Logically, wouldn't it be "yes, it isn't"?

Isn't it?

A ridiculous question.