I like to think that this refers to the second definition of "waffle"
waf·fle 2 (wfl) Informal
v. waf·fled, waf·fling, waf·fles
v.intr. To speak or write evasively.
v.tr. To speak, write, or act evasively about.
n. Evasive or vague speech or writing.
Imagine being able to spend an hour or two avoiding the issue with these two substantial ladies. If only they had tractors....