I think it was that scene, so yes, I mis-remember.
And I guess the Giant has better things to do than comment every time someone is Wrong on the Internet about his comic. Dude'd be here all day if that was his policy!
EDIT
Mmm...Possible, I suppose, but a bit of a stretch, I think. And if it was a genuine mistake, wouldn't he have said "sorry my bad" in strip 871? Anyway, as I said previously, this tea business may just be overanalysing something that was included simply under Rule of Funny.