"Thou call'dst me a dog": Flexibility in the text

Small changes, big difference.
From Cracked.

I just went back and read through the original text again, and the thing that impressed me most was the flexibility of the text.

I've been looking up several interpretations of the text, most notably Anthony Heald's interpretation of the text, as well as (a summary of) the Nazi-edited script. In both cases, minor changes can drastically change the play.