Sentence:  "Yet lastly, of firstly, "Meeeeee"......... - whichever way outstretched, it makes no difference- We all are one!" concluded one of them, somewhere- too hard to tell which one of the spheroids- for all seven resonated remarkably as but "one" whirling equatorial <WSD>girthline</WSD> of an undivided "supercircumference". 
Meaning of the word marked with <WSD> tags:  A real or imaginary line around the girth of something.