[Nogbad]

Hannity spoke at the start of his radio show,
once, and only once, to my knowledge,
as if it was a subject he wanted to get off his mind
and forget about.

I got the impression he would have said nothing at all
had there not been some news reports
which mentioned that Fox/Hannity had received these letters.

I believe he suggested that the unpleasant substance
was excrement.

[Mitchell]

I believe he suggested that the unpleasant substance was excrement.

Well, that would certainly explain why the letters were memorable.