Example, using parens to clarify grouping:   Sentence: "I talked about sex with your grandmother."
  Meaning 1: "I talked (about sex) (with your grandmother)."
  Meaning 2: "I talked about (sex with your grandmother)."

To show the Amphiboly, identify the offending phrase and give the two possible interpretations.

Am*phib"o*ly (#), n.; pl. Amphibolies (#). [L. amphibolia, Gr. : cf. OE. amphibolie. See Amphibolous.]

Ambiguous discourse; amphibology.

If it oracle contrary to our interest or humor, we will create an amphiboly, a double meaning where there is none. Whitlock.

© Webster 1913.