They miss my favorite: "Yes, we'll invest we just don't want to be 'lead'."
That is code for: "You aren't going to find anyone who shares your idea of what your valuation should be so we are safe telling you we'll invest if you find a 'lead investor' because that person doesn't exist."
It gets funny/twisted when you do find a lead and go back and now there is some other goal post that is keeping them out of "this round."