That's the farthest I can take my imagery to.

I guess you want to express one's inability to envision something due to boundaries of one's mind.

I'd simply say: That's all I can make the most of my mind about. No further.
That's beyond my imagination.
That's how much I can cudgel my brain about. (Sheakspeare's expression).

Thanks, Fandorin...

May I request some more input here? If a person is telling you something very funny and then you just cut him short saying:

That's the farthest I can take my imagery to at the moment.

Thanks for your time,

Tom

You're welcome.

Mr. TomIf a person is telling you something very funny and then you just cut him short saying, then ... ???:

That's the farthest I can take my imagery to at the moment.

Did I miss something? What is the question you have about the sentence?

May I request some more input here? If a person is telling you something very funny and then you just cut him short saying: "That's the farthest I can take my imagery to at the moment."

In that context, the remark is of an inappropriate register; I think you have chosen the wrong words, if I understand what you want to say. I suggest: 'I can't get my mind around all t