(I) can't say's I do

I don't know with certainty. ("Say's" is a colloquial contraction of "say as.") A: "Do you know how many people are coming to dinner tonight?" B: "Hmm, can't say's I do." They asked me if I know how to create a spreadsheet like that, but I can't say's I do. Do I have a top hat that you can borrow? You know, I can't say's I do.

See also:

(I) can't say as I do
can't say as I do
(I) can't say as I do(, can't say as I don't)
(I) can't say that I do
can't say that I do
AFAIK
get (all) torn up
be (all) torn up
closed book, a
a closed book

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