Just copy/paste the text from your post in the TMF topic into the reply box in your TickleTheater topic - it's the simplest way. If you've got lots of text-altering things like italics or bold or underline or whatever, a neat trick is to make as if you're going to edit or quote your own post, then copy the resulting raw text and pasting that here - that way, you won't have to hunt down all of that stuff and change them manually.